Quote:
Originally Posted by kathyricks
The reason synthetic oil is not popular with car and truck fleet managers or long haul courier companies is because after 30 years worth of testing and
evaluation, they have found synthetics do not appreciably extend engine life or enhance fuel economy.
Conventional oil has been capable of protecting Toyota engines for 500,000+ miles since way back in the early 1970's. Here's photograhic proof:
http://i5.photobucket.com/albums/y18...tech/18rcb.jpg
And conventional oil is capable of keeping Toyota engines clean inside for 34+ years. Here's photographic proof:
http://i5.photobucket.com/albums/y18...ch/conv18r.jpg |
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.
The Japanese automakers have always said that their engines have been tested with mineral oils and perform acceptably, but they have never said anything one way or the other as to how they feel about the use of synthetic oil. They merely give a blanket statement saying something along the lines of as long as the oil you use meets the minimum rating, that its fine.
However, 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. Even if all you look at is the molecular structure of synthetic vs mineral you will see the advantages of synthetic. The molecules of synthetics are like billions of microscopic ball bearings, whereas the molecules of mineral oils are jagged and random. It doesnt take a rocket scientist to figure out which is going to lubricate better.
