Stop Smoke Diesel Pack™
Our 3 most popular, heavy duty products to ensure your diesel engine runs at its optimum, the Stop Smoke Diesel Pack is designed to;
- Reduce exhaust smoke and engine blow-by
- Get your engine clean and keep it clean
- Reduce repairs and parts wear and tear/component wear
- Save costs on long term repairs and increase fuel economy
Stop Smoke Diesel Pack contains these 3 very effective products –
- ULS Diesel Enhancer – removes fouling deposits in diesel fuel injectors, even stubborn ones that most “off the shelf” products won’t touch. The perfect solution to the low lubricity problems caused by today’s Ultra Low Sulfur Diesel, particularly in modern High Pressure Injection diesel engines!
- FTC Decarbonizer – acts as a combustion catalyst to burn carbon from combustion and exhaust spaces. It also removes hard carbon build up on pistons and cylinder bores, restoring cylinder compression – it de-glazes bores without needing to rebuild the engine!
- Flushing Oil Concentrate – a unique product that totally removes oil contaminants, including sludge, diesel soot and other particles. And, it frees sticking piston rings! Assists in fixing engine blow-by and excessive oil use. Use it at time of engine oil change.
Save money by purchasing these products at a discounted combination Value Pack price!
5 Value Pack sizes to choose from…
Stop Smoke Diesel Pack
Reduce exhaust smoke and engine blow-by
The Stop Smoke Diesel Pack contains 3 heavy duty, very effective products –
-

Our 3 most popular, heavy duty products to ensure your diesel engine runs at its optimum
ULS Diesel Enhancer – the ultimate in cleaning complete diesel fuel systems, particularly modern high pressure injection systems – HPCR, HEUI, and CRDi. It removes fouling deposits in fuel injectors, even stubborn ones that most “off the shelf” products won’t touch. It eliminates engine rough idle and provides smoother operation throughout the full rev-range. It contains an enhanced upper cylinder lubricant to keep cylinders and pistons cooler, along with reducing component wear. ULS Diesel Enhancer is the perfect solution to the low lubricity problems faced by Ultra Low Sulfur Diesel engines, and is especially effective in modern HPCR, HEUI, and CRDi high pressure injection diesel engines!
- FTC Decarbonizer – acts as a truly unique and effective combustion catalyst to burn carbon from combustion and exhaust spaces, including catalytic convertors, Diesel Particulate Filters, Exhaust Gas Recirculator Valves and turbo chargers. It also removes hard carbon build up on pistons (especially the rings and ring grooves) and cylinder bores, restoring cylinder compression – it de-glazes cylinder bores without needing to rebuild the engine!
- Flushing Oil Concentrate – a heavy duty, solvent-free engine flush concentrate allows operators to restore full cleanliness to the entire crankcase, removing all engine sludge and freeing sticking piston rings, particularly the oil-control ring. This action restores correct oil control on the cylinder walls, reducing exhaust smoke and oil use, restores cylinder compression, and controls engine blow-by. Use it at time of engine oil change.
This Value Pack is available in 5 different size combinations.
This Value Pack is available in 5 different size combinations:
Mini Pack contains –
- 8 fl oz of ULS Diesel Enhancer
- 32 fl oz of FTC Decarbonizer
- 8 fl oz of Flushing Oil Concentrate
This pack has been developed to suit most small to medium diesel powered vehicles/machines with engines up to approximately 6.0 liter engine displacement (370 cubic inch), and having up to approximately 16 quarts (4 gallons/19 liters) of engine oil capacity. Typical vehicles/machines include diesel powered cars and SUV’s, 4-Wheel drives, small diesel powered pick-up trucks, small agricultural tractors, diesel powered generators, small marine engines, etc.
Mini Plus Pack contains –
- 16 fl oz of ULS Diesel Enhancer
- 64 fl oz of FTC Decarbonizer
- 16 fl oz of Flushing Oil Concentrate
This pack has been developed to suit most medium diesel powered vehicles/machines with engines up to approximately 9.0 liter engine displacement (550 cubic inch), and having up to approximately 32 quarts (8 gallons/38 liters) of engine oil capacity. Typical vehicles/machines include diesel powered 4-Wheel drives, many medium size diesel powered pick-up trucks, RVs, small to medium agricultural tractors, medium marine engines, etc.
Small Pack contains –
- 32 fl oz of ULS Diesel Enhancer
- 1 gallon of FTC Decarbonizer
- 32 fl oz of Flushing Oil Concentrate
This pack has been developed to suit most large diesel powered vehicles/machines with engines over 9.0 liter engine displacement (over 550 cubic inch), and having up to approximately 64 quarts (16 gallons/76 liters) of engine oil capacity. Typical vehicles/machines include large heavy duty, hard-working vehicles and machinery, e.g. full-size trucks, 18-Wheelers, earthmoving and excavating machinery, large agricultural tractors, large marine engines, etc.
Medium Pack contains –
- 64 fl oz of ULS Diesel Enhancer
- 2 gallons of FTC Decarbonizer
- 32 fl oz of Flushing Oil Concentrate
This pack is most suitable for diesel powered trucks etc. that cover a lot of miles relatively quickly, e.g. long distance OTR Truckers. The 2 gallons of FTC Decarbonizer and 64 fl oz of ULS Diesel Enhancer keeps these trucks on the road for a long period of time without needing to reorder as often, allowing for the full benefit of the ongoing de-carbonizing effect, ultimately removing all engine-destroying hard carbon from the combustion chamber, and promoting more efficient long-term engine performance.
Large Pack contains –
- 1 gallon ULS Diesel Enhancer
- 4 gallons of FTC Decarbonizer
- 64 fl oz of Flushing Oil Concentrate
This pack is suitable for small fleet operators with up to 3 or 4 diesel powered trucks or other equipment, or a combination of different types of machines, e.g. truck, excavator, dozer, crane, boat, etc.
(32 fl oz = 946 mL, 1 liter = 33.8 fl oz)
Buy Now, Pay Later (BNPL)
Buy your products now and pay for them over time!
Pay-in-4 is a class of short-term financing that allows you to purchase a product today and pay for it in installments over 6 weeks, with no interest.
Unlike traditional credit cards, BNPL often involves only a soft credit check that doesn’t impact your credit score.
- Interest-free payments: Many plans offer the option to pay in installments without incurring interest charges, for example: Pay-in-4.
- Budget-friendly: Spreading the cost of a purchase into smaller payments can make it easier to budget.
- Flexibility: Affirm, Afterpay, and Klarna offer different payment options, including “pay in 4” or longer-term financing.
Affirm*
At Checkout:
Look for the Affirm logo when completing your purchase, or pay with your Affirm Card.
Pay in 4 interest-free installments over six weeks. Make the first payment upfront and each one of the remaining 3 payments every 14 days. Credit cards and Checking accounts are the common payment options used with Affirm. Chase and Capitol One credit cards may not be used.
Always interest-free when you pay it in 4. No fees, ever.
Other interest-bearing, longer-term payment plans may be offered. Limits may apply.
Afterpay*
At Checkout:
Look for the Afterpay logo when completing your purchase.
Pay in 4 interest-free installments over six weeks. Make the first payment upfront and each one of the remaining 3 payments every 14 days.
Afterpay accepts credit and debit cards from Mastercard, and Visa which were issued in your country of residence. Afterpay also accepts digital forms of payment such as Apple Pay, Google Pay and Cash App Pay. Pre-paid cards cannot be stored in your account, but you can use them to make one off payments.
If eligible, you also have the option to link your checking account to your Afterpay account.
Always interest-free when you pay it in 4. No fees when you pay on time.*
Other interest-bearing, longer-term payment plans may be offered. Limits may apply.
Klarna*
At Checkout:
Click on the pink badge and pay with Klarna.
Pay in 4 interest-free installments over six weeks. Make the first payment upfront and each one of the remaining 3 payments every 14 days. Use your own US-issued debit or credit card to make each automatic installment payment.
Always interest-free when you pay it in 4. No fees when you pay on time.
Other interest-bearing, longer-term payment plans may be offered. Limits may apply.
Do I have to pay Sales Tax on my order?
U.S. orders: When ordered directly from the maxodyne.com website or by phone-in order:
Delivery Address outside of Utah: No Sales Tax is payable on orders with a delivery address outside of Utah.
Delivery Address within Utah: Currently subject to a State Sales & Use Tax charge of 7.45% of the product price, i.e. Product cost = $100, Sales & Use Tax = $7.45.
Sales & Use Tax charges are automatically calculated and applied at the point of Checkout.
Shipping charges, if any, are not subject to Sales Tax.
Third party orders within the U.S.: e.g. Amazon and eBay: Sales Tax is added to the order at the point of purchase consistent with the delivery destination’s Sales Tax rate, and may include Sales Tax applied to shipping charges, if any. Sales Tax is added to the order by the Third party, and is collected and remitted to the applicable Tax Authority by the Third party.
International orders: When ordered directly from the maxodyne.com website or by phone-in order:
No U.S. Sales Tax charge applies to orders with a Delivery Address outside of the U.S.A.
There may be Duties and/or Fees applied to the order by the destination country’s Customs and Import Authority. These fees, as calculated by the local Customs Authority, are payable by the Purchaser/Importer at the time of Customs Entry.
USA Lower 48 States – From our facility in Utah, we ship daily using FedEx Standard Express as our main shipping contractor. Orders are shipped within 1 business day of receipt, and delivery is within 3 business days*. Shipping is free within the lower 48 States for orders over $50.^˜
Please note, FedEx will not deliver to USPS P.O. Box numbers as per USPS guidelines. Please provide a physical street address for shipping/delivery.
Alaska, Hawaii and Canada – we ship to Alaska, Hawaii and Canada at a subsidized rate. Shipping rates are added automatically at Checkout. All prices are in U.S. Dollars. GST & Duties/Fees may apply to Canadian purchases, payable by the purchaser as calculated by CBSA at time of entry.
Canadian customers – if it helps, we can also ship to any USA destination (Lower 48 States) for local pick-up or on-forwarding by a carrier of your choice; for example, you may have your own preferred carrier from the USA to Canada. Free shipping applies to destinations within the Lower 48 States. Ask us for details.
International Orders – We welcome our International customers! Please Contact Us for a shipping cost quote and further instructions about completing your purchase.
Please note – due to certain logistics and Federal Regulations, we are unable to ship to some Countries/Territories.
Need your product in a hurry?! Utilizing the services of FedEx and UPS, we can priority ship your product to your chosen destination*. Just contact us, tell us where you need it and when – we can then calculate the cost and advise you of the shipping details. All prices are in U.S. Dollars.
*We reserve the right to use other shipping suppliers and services as we deem necessary from time to time, depending on prevailing circumstances. Delivery schedules may be affected by conditions beyond our control.
^A $10 shipping charge applies for orders below $50 excluding tax.
˜Applies to retail quantities only. For commercial quantities, please contact us for further details.





Night to day difference
“I got your Stop Smoke Diesel Pack for my old 2006 Ram. 5.9. It’s got 286,000 miles, and mostly it is running fine, or so I thought. You can really tell the difference from using the fuel treatments (FTC Decarbonizer and ULS Diesel Enhancer), it’s like night to day! I’ve not done the oil flush yet, but once I get to doing it I will let you know how that goes and keep you posted.”
Adrian R, Reno, NV
6.7 Powerstroke never been better!
“Our 2013 F250 Lariat, 6.7 Powerstroke has had problems for a while now. It’s got pretty low miles for its age, and it was down on power, bad exhaust smoke, noisy idle. I’ve owned it since new, I’m a very particular person, it’s always been serviced above the recommendations. I’ve tried many products to fix the problems its been having, but with no luck at all. After talking to you about it, I ordered the Stop Smoke Diesel Pack. I admit I was a bit skeptical about it, but I’ve tried just about everything else, I might as well give your products a shot. I tell you, these products work! It’s almost unbelievable! It has NEVER idled so smooth and so very quiet. Never! The acceleration and power is better than it has EVER been! The exhaust smoke has disappeared, I can definitely feel the turbo working again too. It’s a different truck, I’m amazed about how much better it is. Amazing results from these products, I can totally recommend them, they work!“
John D, Rochester, NY
Land Rover Discovery diesel
“Just wanted to let you know that I’ve been using your diesel additives for three fills now and THEY REALLY WORK! But of course you already know that.
My old Land Rover Disco 3 diesel is running really smoothly and definitely has considerably more power.
The difference is clearly noticeable — if she was a horse, you’d say no way is she going to the knackers!
A new lease on life. Many thanks!”
Bill G, Obi Obi, QLD, Australia
1978 Blue Bird Wanderlodge
“My 1978 Blue Bird Wanderlodge had been having a white exhaust smoke problem for quite a long time, and it was slowly getting worse, and it just ran rough. It didn’t miss, and the power seemed normal. It has the Cat 3208 engine, with only 100,000 original miles. It sits a lot, I don’t drive it as much as I’d like. About a year ago I had the fuel pump rebuilt. Anyway, I bought the Stop Smoke Diesel Pack, and started using the Diesel Enhancer right away. I then used the Oil Flush. After driving for just a little while the white exhaust smoke has cut right back to almost nothing now, and the engine is certainly running much better, smoother and quieter. I’ve started adding the FTC Decarbonizer to the fuel also, and I expect it will continue to improve even more. Many thanks for these great products, they’ve honestly helped a lot.“
(Stop Smoke Diesel Pack contains FTC Decarbonizer, ULS Diesel Enhancer, and Flushing Oil Concentrate)
Manzie L, Naples, FL
Twin Diesel Marine Cummins
“We have a recreational boat with twin 8L Cummins marine engines. They’re 21 years old, but only have 1780 hours total. Over the years we’ve done regular oil changes and maintenance. We thought that was enough, but it seems that was the downfall. The boat sits a lot (obviously) and has a lot of long periods of low speed/low load getting it through the ship canal and locks to get to the ocean. Summer of 2021, one engine started to smoke a bit, and would run on only 5 cylinders for a few minutes after starting. Replaced the injectors hoping that would fix it. It didn’t. Last summer (2022) it got worse – that engine was slow to start, smoked more, and started using a lot of oil. Fall of 2022, we took the boat out after servicing for a short run. It began to knock and bang HORRIBLY, so we limped home. Tested compression, the Starboard engine #1 cylinder had 0 compression. At tear down, it was blatantly obvious that the rings had carboned up and broken, then the piston slapped around and broke, destroying the piston and liner. With only 1780 hours!
We in-framed that engine, and to preserve the port engine which was smoking and getting harder to start, we have used Flushing Oil Concentrate, and are using FTC Decarbonizer and ULS Diesel Enhancer in the fuel tanks, and AW10 Antiwear in the old port engine. Results so far – the engine oil in the port engine remains very clean after the flush, the starboard/rebuilt engine will get a flush after it has bedded in. After adding the FTC Decarbonizer to the fuel, I noticed RPM picked up immediately and the engines idled more smoothly. Last Friday (before fuel treatment), the Starboard engine (just rebuilt) turned 2515 RPM WOT and the Port turned 2435 RPM WOT. Today, after adding the diesel treatment, both engines turned 2530- so we are picking up a few horsepower for sure! I’m sure the AW10 is helping with that also! With these engines, gaining 100 RPM is not insignificant. I can’t wait to see further improvement with a little more time.”
John E, Bellevue, WA
ISX15 Oil consumption fixed
“My ISX 15 Cummins has around 750,000 miles, and started using a lot of oil over the past few months or so. The cost of an inframe overhaul was not good. I decided to go ahead and order your products and did the oil change flush about 10 days ago. Great stuff! Usually the new oil is black again right after I get the oil changed. Now, 10 days on the road, and it’s still clean on the dipstick! That’s crazy! The oil consumption has now dropped back to almost nothing. The FTC Decarbonizer and ULS Diesel Enhancer are making a huge difference too. I’m sure the rings and injectors have cleaned up. The engine is running a ton smoother, it’s up on power, and miles per gallon is up too. It’s like it’s opened up, got everything cleaned up. I’m noticing a real difference, it’s crazy! I’m very happy with the products, I’ll keep using them, keep this girl on the road. I’ve already told a lot of other drivers about them. Thanks for your help!”
Jean I, Lorain, OH
No problems in 3 years
“I’ve been using your products for coming up 3 years, and I’m amazed at how strong my Freightliner still is. It just keeps running with no problems, and I believe it’s your products that are keeping it that way. Not once have I been pulled up on the side of the road, not once!! The FTC Decarbonizer, Flushing Oil Concentrate and ULS Diesel Enhancer do a great job. I haven’t touched the injectors at all, oil pressure is strong all the time, engine runs smooth and strong, the initial blowby settled down and has never come back. Thanks for great products, I really believe in them.”
Howard B. Monroe, TN
Amazing stuff
“I want to let you know, this stuff is amazing! I bought an old Dodge Ram with the 5.9 Cummins engine, about 200,000 miles on the clock. It was very low on power, clouds of exhaust smoke, and had lots of blow-by. I got the FTC Decarbonizer from you and added it to the fuel. Seriously, within about 2 hours of driving, I could tell the power had improved noticeably, and the blow-by had reduced significantly. I was shocked at how well it worked! Now I’ve done about 1500 miles, and the exhaust smoke has completely disappeared, and it’s running much smoother! I’m getting the Flushing Oil Concentrate from you now to finish the job right.”
William M, Menifee, CA
Remarkable improvement
“I do not have enough good to say about these products!!
I own a 2002 Peugeot 308 with a 2.0 turbo diesel. (mileage: 290K kilometers/180k miles)
When I purchased this vehicle it was at 150k (93K miles) and felt under-powered due to the mileage.
I contacted Maxodyne and spoke with Scott, and asked if he felt their products could help my small diesel car. After asking me some questions about the car, he suggested I use 3 products. I used the oil flushing treatment, and I have since been running the FTC Decarbonizer and the ULS Diesel Enhancer in every tank.
Scott is extremely knowledgeable and helpful when it came to helping me sort my concerns and needs with this little diesel. (Do not hesitate to contact him, he is a joy to work with.)
Frankly, I am still in awe of the vast difference in the throttle response and power difference while driving this little car, even after the first two treatments.
When I first purchased this vehicle, before the treatments, I was getting an average of 950km per 55L tank of fuel (5.7L/100km, or 41MPG). Since treating the engine with these products I have been getting 1150-1200km (4.6L/100km, or 51MPG) from the same tank. Almost a 25% increase in fuel economy!!
These products pay for themselves every time I need to go to the pump.
I am a firm believer in these products, and will be using them in all my diesel vehicles from now on.”
Brian M. Queensland, Australia
Duramax problems solved
“My 2008 Chevrolet Duramax, with only 129,000 miles, was running badly and intermittently blowing clouds of black smoke at highway speeds. It had bad power loss above 65 mph – usually no throttle response above this speed. Also, it felt and sounded like the turbo was constantly surging at any speed. Over the last couple months I’ve been using FTC Decarbonizer and ULS Diesel Enhancer in the diesel, and it has made a tremendous difference! No black smoke! Running so much smoother, full power again, and I’m getting 2.5 mpg better fuel mileage! I’m looking forward to the results I get from the Flushing Oil Concentrate. Great products that do as you said they would. Really appreciate your help.”
Ryan D, Lawrenceburg, TN