Retail fuel formulations can vary from region to region. However in my 40+ years i have never ran any snkae oil fuel additives across 40's and 50's model Indians, Cushmans, Fergusons, Packards,, HD's, a multitude of various small engine power equipment such as string trimmers and generators and lawn mowers.
I will ABSOLUTELY NOT run a streight weight engine oil however in ANY 4 stroke gasoline engine. I use the multigrades (detergent) such as 10w-30 or maybe as high as 20w-50 for extremely hot running vintage engines such as motorcycles.
Any carbon build up issues is due to runnoing a streight weight engine oil. USe the multigrade and the carboning wil disappear or held to a minimum.
THe claim that multigrade should not be used in high sludge engines because it will loosen or suspend debris is grossly sensationalized. IF the engine is so heavily sludged then the sludge is circulating regardless of what type of oil is used.
Bottom line: NO fuel additives. Run a multigrade engine oil . I don;t care what kind of engine it is, who made it or how old it is.
Works for me. I have several engines here i've ran for over 40 years with good results.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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