[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
The primary effects of STP oil treatment are:
1) Increase the viscosity of the oil;
2) Add a petroelum component to synthetic oil if used (this is bad,
because it compromises the wear characteristics of the oil).
3) Probably (opinion enters here) compromise the designed
multi-viscosity characteristics of the oil (also bad).
IMHO, if lifters sound quieter using STP, they can be made to also sound
quieter by running a higher-viscosity (preferably synthetic) oil.
The synthoil will clean all lifters, etc. well since it's highly
If the engine is using some oil and therefore not a candidate for
synthoil, STP might have some virtue - but in cold areas, due to
raising the oil's viscosity, the car should be a bit harder to start.
Andy Granatelli will never die.......he'll just become a new