Quote:
Originally Posted by Bakemono
Id like to know what car and truck fleet managers and long haul courier companies you are talking to, because its common knowledge that synthetic oil does extend engine life and does enhance fuel economy.
if you honestly think that there is no benefits in terms of longevity and fuel economy in using synthetic oil, you need to go back and redo your research because you are wrong.
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Mobil 1 and Amsoil have been around since 1975 and car and truck fleet managers have been evaluating synthetics all that time. Their conclusion, as published in Fleet Trucking magazine is that most feel the fuel economy, engine life and oil life extending benefits of synthetics are miniscule and not worth the extra cost.
As a long time travelling salesman, I have lots of real world experience with synthetics as well - 477,777 miles worth as a matter of fact:
http://i85.photobucket.com/albums/k75/4af/477.jpg But the rate my synthetic running engine is burning oil after 477,000 miles (2500 miles per quart) is about the same as other Toyota owners who have been using conventional oil for a similar amount of miles. This fact leads me to believe our piston rings and cylinder bores are wearing at nearly equal rates. As does the fact that the maximum known engine life potential of a Toyota engine has been in the 600,000 - 1,000,000 mile range regardless if the owners ran conventional or synthetic.
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