fhs full-synthetic Oil FAQs

What makes FHS Full-Synthetic Motor Oil smokeless?

FHS uses an API classified Group V synthetic base oil along with special synthetic protective additives that burn cleaner and do not smoke.

Independent tests showed FHS Smokeless Motor Oil to have less than .005% of sulfated ash (ASTM D874), ~740 ppm of Phosphorous, and ~15 ppm of Sulfur (ASTM D5185). With a viscosity index (ASTM D2270) of ~200, FHS Smokeless Motor Oil is stable even under extreme temperatures.

What weight is FHS Full-Synthetic Smokeless Motor Oil?

FHS Full-Synthetic Smokeless Motor Oil is available in the following straight grades:  SAE 20 (Smokeless Lite), SAE 30 (Smokeless Medium), & SAE 40 (Smokeless Heavy). It is also available in the following multigrades: 5W-20, 10W-30, 15W-40, 20W-50, 20W-60.

How do I use FHS Full-Synthetic Smokeless Motor Oil?

1. Drain old oil from crankcase. A hot engine drains better.
2. Flush system (if necessary). Note: Flushing the system may also cause smoke, by loosening deposits instead of removing them.
3. Replace oil filter with a quality oil filter. No special filter is necessary.
4. Fill with FHS Full-Synthetic Smokeless Motor Oil.
5. Let motor run for 5 to 10 minutes and smoke should stop or be greatly reduced.

How much FHS Full-Synthetic Smokeless Motor Oil do I need?

Most 4-to-6-cylinder engines require 5 to 8 quarts for an oil change. However, we recommend you consult your vehicle owner’s manual for the most accurate oil quantity for your particular make and model.

How long should I go between oil changes?

FHS Full-Synthetic Smokeless Motor Oil lasts up to 10,000 miles between oil changes though actual mileage varies depending on vehicle type and usage. We recommend checking your oil regularly as you normally would with conventional motor oil.

Will it affect the oil pump or seals?

FHS Full-Synthetic Smokeless Motor Oil will not affect these automotive systems. However, we recommend oil pumps or seals be examined by an automotive professional during regular maintenance inspections.

Can it be used with other oils or additives?

FHS Full-Synthetic Smokeless Motor Oil is designed to work alone and should not be used with other oil products or additives. It is a complete oil package with all the protective and lubricating properties necessary for your engine. If you use FHS Full-Synthetic Smokeless Motor Oil with other oils, you will get smoke. Also mixing different brands of oils can reduce the protective qualities of the oils.

Are there vehicles that FHS Full-Synthetic Smokeless Motor Oil won’t work on?

FHS Full-Synthetic Smokeless Motor Oil works with a wide range of makes and models. Please complete the form on our Contact Us or give us a call if you have a question about your specific vehicle.

What is FHS Full-Synthetic Smokeless Motor Oil’s success rate of reducing smoke?

FHS Full-Synthetic Smokeless Motor Oil has over a 99.9% success rate of stopping oil smoking.

Will it run in 2-cycle or 4-cycle engine applications? 

For 2- or 4-cycle engines, visit our Shop page to see our FHS Full-Synthetic 2-/4-Stroke Motor Oil series made specifically for small engines.

Will it fix emissions problems?

FHS Full-Synthetic Smokeless Motor Oil will generally reduce emissions resulting from oil burning.  Not only does it stop visible smoking, actual tests on vehicles which failed emissions exams show that it can improve emissions enough to pass emissions tests. It can drastically reduce hydrocarbon (HC) and carbon monoxide (CO) levels to acceptable/passable emission limits.

Disclaimer:

For oil related smoking problems, FHS Full-Synthetic Smokeless Motor Oil works over 99% of the time. However, proper diagnosis of the source of engine smoke is important, as this oil will have no effect on coolant, fuel, or carburetor related emission or smoking problems.

FHS Full-Synthetic Smokeless Motor Oil should not be used in conjunction with any additive or other motor oils. Mixing other oils with FHS Full-Synthetic Smokeless Motor Oil will cause vehicles to smoke (the non-smokeless oil still burn and create smoke). If sludge buildup is present, a system flush may be required before adding FHS Full-Synthetic Smokeless Motor Oil.

Note to automotive repair professionals and auto dealers:

We recommend that you mention to your customers if a car is using FHS Full-Synthetic Smokeless Motor Oil, and please give our information so that customers know where to obtain more FHS Smokeless Motor Oil if desired. Honesty is the best policy.