If you want a professional-grade, multi-bottle fuel system overhaul kit complete with a dedicated cleaning towel for your workspace, choose SMA ProQor Berryman 0116; if you need a versatile dual-action treatment that tackles both gasoline deposits and oil sludge in high-mileage engines, choose Generic High Mileage Motor.
• This pick is for DIY enthusiasts who want a comprehensive, bulk fuel system deep clean and appreciate having a shop towel included for messy work.
• This pick is for owners of older cars and trucks looking for a single product solution to address buildup in both the fuel delivery and lubrication systems.
The SMA ProQor Berryman 0116 bundle is engineered for the person who treats vehicle maintenance as a serious project rather than a quick fix. The core of this kit is the Berryman B-12 Chemtool, a professional-strength additive formulated to tackle the specific chemistry of gasoline engines. Unlike generic spot cleaners, this formulation is designed to circulate through the fuel tank, lines, carburetors, and injectors while the engine runs. It targets the root causes of performance issues: gum, varnish, and carbon deposits that accumulate over time in the combustion chamber and on intake valves.
What sets this bundle apart for the do-it-yourselfer is the sheer scale of the supply. Receiving twelve 15-ounce bottles means you have enough product to perform regular maintenance on multiple vehicles or to run a rigorous, long-term cleaning regimen on a single high-mileage car. The inclusion of the SMA ProQor branded shop towel adds a layer of practical utility often missing from standard chemical kits. When you are pouring treatments or wiping down spark plugs after a service, having a heavy-duty towel specifically for the job keeps your workspace tidy and prevents accidental spills from staining your garage floor or clothes.
This product is ideal for someone who wants to restore proper fuel flow and atomization to ensure smoother idling and improved throttle response. It is also a smart choice for those concerned about extending the life of their catalytic converter and oxygen sensors, as the formula is designed to be safe for these emission components. However, if you are looking for a product that will simultaneously flush out old oil sludge or treat the internal crankcase, this kit will not meet that need. It is strictly a fuel system solution, but it delivers that function with professional intensity and a substantial quantity that justifies the investment for serious DIY repairs.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-06 · 6 min read · Independent comparison
The Generic High Mileage Motor Treatment (HM16) appeals to a different segment of the automotive market: the owner of an aging vehicle where general wear and tear has led to accumulation in multiple areas of the engine. This product distinguishes itself by being a true multi-purpose additive. It is specially formulated for gasoline cars and trucks with extended service lives, targeting the dual problem of fuel system deposits and oil-related grime. While many cleaners only address one side of the equation, this formula claims to support cleaner engine components across the board, making it a convenient all-in-one maintenance solution for high-mileage fleets or personal garages.
The versatility extends to how you apply it. You can pour it into the fuel tank to help dissolve stubborn gum and varnish from the injectors and fuel lines, just like a traditional fuel cleaner. Simultaneously, the same liquid can be added to compatible engine oil to help liquefy petroleum-based deposits and crankcase residues. This dual capability is particularly valuable for older engines where sludge buildup in the oil pan can restrict oil flow and reduce efficiency. By treating both systems with a single bottle, you streamline your maintenance routine, ensuring that both the fuel delivery pathways and the lubrication system are receiving attention during your service interval.
This product is best suited for drivers who prioritize convenience and breadth of coverage over specialized volume. The four-pack of 16-ounce bottles provides a solid inventory for maintaining a few vehicles or keeping a reserve for future needs, totaling 64 fluid ounces. It is an excellent choice for passenger cars, SUVs, and trucks that show signs of age-related deposit buildup. However, if you are performing a deep, aggressive cleaning of a fuel system and need the maximum possible volume of concentrated cleaner to tackle severe carbon fouling, this 4-pack might feel less substantial than the 12-bundle option. It is a balanced, practical tool for keeping an older engine running smoothly, provided you follow the specific dosage instructions for both fuel and oil applications.
• Best for multi-system maintenance → Generic High Mileage Motor: If you want to treat both the fuel injectors and the engine oil sludge with a single product type, this is the only option that covers both areas.
• Best for professional-grade fuel cleaning → SMA ProQor Berryman 0116: The B-12 Chemtool is explicitly designed to dissolve gum, varnish, and carbon in the combustion chamber, intake valves, and pistons with a focus on restoring fuel atomization.
• Best for high-mileage oil health → Generic High Mileage Motor: Only this product offers a specific application for adding to engine oil to liquefy petroleum-based deposits and crankcase residues before an oil change.
• Best for workspace organization → SMA ProQor Berryman 0116: The inclusion of the SMA ProQor shop towel makes this kit ready for immediate use during messy tune-ups, whereas the other requires you to source your own cleaning rags.
• Best for fleet or garage inventory → SMA ProQor Berryman 0116: The 12-pack size is ideal for servicing multiple vehicles or stocking up for a year of maintenance, reducing the frequency of reordering.
• Best for simplified dosing → Generic High Mileage Motor: Using one product for both fuel and oil reduces the number of bottles you need to track and manage in your garage.
For my own DIY repair projects, I would choose the SMA ProQor Berryman 0116. While the Generic High Mileage Motor offers a clever dual-action approach for older engines, the sheer utility of the Berryman kit is hard to ignore. Having twelve bottles of professional-strength cleaner ensures I can maintain peak fuel system performance for a long time, and the included shop towel shows a level of thoughtfulness that makes the actual work easier. The ability to thoroughly clean the entire fuel train—from the tank to the combustion chamber—is critical for restoring throttle response and efficiency. In my opinion, when tackling major engine maintenance, specialized, high-volume tools beat generalist solutions every time.
It does not mention compatibility with diesel fuel systems.
Yes, the product is described as a multi-purpose additive designed for gasoline fuel system cleaning and approved engine oil treatment applications in the same formula.
Yes, the product information states it is a catalytic converter and oxygen sensor-safe formula intended to help extend spark plug and fuel injector life.
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