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this effect isn't dependent on how much oil is in the gas

This is my basic guideline now...

So if my bike doesn't have a CDI that adjust timing according to throttle position and RPM then I'd use slow burn oils (100% synthetic or group 2)

the napkin flame tests were skewed by the amounts of solvent added to the products. The fast burn oils are ones containing group 1 mineral oil, and the oils fully or partially castor oil. The slow burn oils are the fully synthetic oils and the fully group 2 oils. Under full load the fast burn...

Synthetic usually is derived from petroleum and will burn, although it is the most resistant to heat along with castor oil.

You obviously did not read the pages of the link I gave or you would know that I tested 4 major types of oil, including 100% synthetic. I made an adjustable analog CDI based on the design of the KDX CDI.

This is the first time in history, to my knowledge, that this kind of test has been done. Since oils are a type of petroleum just as gasoline is a type of petroleum then the kind of oil should have an effect on the rate of combustion. It's an involved topic and if you want to read about it then...

Try a full range of main jets on both flat surface WOT and under load (uphill, going thru sand or mud, hard acceleration). That may be 5 different jets. Use any of them depending on if your typical riding is flat road WOT or rough going under load. Then take the piston out to look at its...

The lubricity is directly related to the base oil viscosity, before any viscosity modifiers are added. Notice how synthetic oils have a high viscosity and so can be added as half as much than mineral oils.

>"I don't believe 2t oils contain viscosity index improvers" Some of them have lots of VI improvers. This is easily known by using the online calculator to find the 200C viscosity from inputting the 40C and 100C viscosities. The worst case example is Redline Allsport. It only has something like...

The primary importance of oil viscosity: "An oils first line of defense is its viscosity (thickness). The ability of the oil film to prevent contact between the rings and the cylinder is a function of an oils viscosity. Generally speaking, the more viscous or thicker an oil, the greater load it...

In any oils data sheets you can find the CAS # of the base oils they are using in the product. But when I look up those #s I don't find them categorizing the oil into one of the five oil groups which is frustrating. Generally it is said that you can tell by if it's solvent refined or...