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Motor oil revelations !
Here's a bit of insider oil info that will get everybody arguing. I work for a Nascar team. We test oil in ways that you can't imagine. 9300 rpm, and the ability to cushion parts and prevent wear is more important than any other characteristic. All oil flows fine, cold starts fine, it's what it...- Leardriver
- Post #36
- Forum: Engine & Drivetrain
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5.3 vs 6.2 octane
I like Intheburbs answer. I ran a dyno in Denver at high altitude. Several absolutes were clear. In a normally aspirated engine, meaning no turbo or supercharging... Your octane requirements go down about one point for every 1,000 feet above sea level. If you need 91 at SL, 85 runs the same...- Leardriver
- Post #40
- Forum: Engine & Drivetrain
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What is low miles for a 2006 Yukon Denali?
Miles are miles, no matter what leisurely rate they are acquired. The concept of low miles for the year is a car salesmen tactic. When a vehicle has 150K on it, it is tired and waiting to hurt you. It just so happens that the Chevy drivetrain has been pretty good at lasting a long time, but a...- Leardriver
- Post #22
- Forum: Engine & Drivetrain
