Originally Posted By: Bud_One
I'd like them to try it over a period of 2 years with normal every day people driving .
But they guarantee the product for 1 year, not 2.
That's the whole point of this product: A ton of miles accumulated in a short amount of time, which means a lot of these miles are easy hwy miles and not much, if any, short tripping and cold starts. Once you go outside of these driving patterns, all bets are off.
This is what they said about their test:
Originally Posted By: XOM
Each vehicle endured a severe duty test cycle on a mileage accumulation dynamometer, and operated under a combination of incline and towing conditions with oil changes every 20,000 miles.
So yeah, even though the engine was under heavy load, it doesn't say anything about cold starts and short tripping, which is when oil (and engine) takes a beating due to excessive fuel dilution and not running at normal operating temperature.
But again, the assumption is that the target customer for this product puts on 20K miles in 1 year or less, which means the customer is doing a lot of hwy miles on a warm engine.
A more impressive product would have been one where they would guarantee 15K miles in 2 years.