Ron,
I know you meant that tongue in cheek as it has absolutely no merit as to reality. I drive more miles than most who read this board. I've changed oil 10 times total over 68,000 miles. That's with oil analysis every time. Blackstone tells me to go longer each time I've sent them something. One sample to Blackstone had 10,000 miles with 2 track days and 3 autocrosses. They said go longer. That was my first time with the 0W-30. If I've put in 115 qts of oil over the life on the car I'm guessing that's maybe $300-400 more in oil costs than Mobil 1 ......but then you and most on here change their oil and filters at least twice as much as I do. Cost advantage to Amsoil. The Amsoil gear lubes I run are considerably cheaper plus I go 30,000 between changes, again with oil analysis. They also always come back 'suitable for further use.' I might add I'm running a 3:45 rear end which runs hotter because it's spinning more
Tom, and others have issues with Amsoil, but more centered around the marketing and official testing of it rather than the quality of the product itself. If I remember right, several years ago he once dissected the oil analysis results of my oil (6000 miles with track time) vs 1500 easy Mobil 1 miles. As I remember it, the nod went to the Amsoil.
Steve
