I run nothing but Amsoil. If you use the 100% synthetic, you can go 25K without changing the oil. Steve
First of all this is a "TURBO BUICK BOARD", so your logic may be true for a Suburban board, it is NOT applicable here.
Do not take this personal, but there is a MAJOR difference between a boosted, performance engine, and a Suburban driver, and that is oil contamination.
Put boost in your engine, which is set up "looser" than a late model, high tech engine designed for economy, and there is a world of difference.
The TR should be using premium gas, or even leaded gas, [maybe alcohol too?] and this gas, both burned and unburned, gets pushed into the crankcase under boost. Does not matter if it is on the street or strip.
I know LOTS of TR owners and all of them utilize "boost" almost every time they drive their car. Why have boost if you are not going to use it?:biggrin:
Since every knows oil is cheaper than an engine rebuild, it is good insurance to do frequent oil/filter changes in a TR, like every 1000 miles, or never longer than 3000 miles.
So with this change interval, what is the advantage of synthetic over regular oil? Don't give me the "better gas mileage" as again this is a performance car. The high dollar synthetic will get just as contaminated, or probably more so, than regular oil.
So the Cad CTS-V owners spend $60-70K on their cars, and generally have them a year or 3 until they get their next toy? Again, what they do, or oil they use has no bearing here.
I respect others opinions, and always like to know different points of view. But it is imperative that the info be qualified, and any comparison must be within proper bounds.
Dennis has been pointing out info in his postings that is directly applicable to the TR world. not just his opinion, but he has gathered over 20 years of experience from many people that have lots of experience with turbo Buicks.
