Oil additives are something I do not recommend you use. The purpose of these additives is to rid you of your money while doing nothing for your engine.
Three oil additives include viscosity index improvers, alkaline compounds, and friction modifiers. Viscosity index improvers reduce changes at high temps, the compounds prevent acid erosion, and the modifiers form protective films on engine parts.
You don't. Add not additives to your oil. If additives worked the manufactures would add them to the oil and recommend you also do so.
Don't. Add no oil additives to your engine. If oil additives were really that good, the oil companys would put them in their own oil.
Best to use Simplicity Multi-purpose Hydro Oil, part #1685516. Not much more in price than an alternate, and get the proper weight and additives.
food additives
To improve it's flavor by adding chocolate
A facny way of saying it has additives
Basestock is refined petroleum oil with no additives.
Oil is oil. Gun oils just have different additives.
Viscosity and additives.
To improve it's flavor by adding chocolate