[MikeK]

Originally Posted by Mike V. Florida

Never let facts get in the way of opinion.

Oh what a slippery slope!
The STP MSDS LINK shows the majority content to be a mineral oil base with something less than 5% added ZDDP. The mineral oil is listed as "mixture" so that would include viscosity modifiers and tackifiers.

Has the 60+% base oil content of STP been so adulterated that it is actually no longer a functional lubricant, or have the lawyers absolved the company of liability by insisting it be mixed with a 'lubricant' so failure liability falls elsewhere?

Is the 'not a lubricant' actually engineering test FACT or legal OPINION?