My friend was a taxi driver and swears by that report.But listen for a second.
Synthetic oil is a chemically specific formula that is perfect every time. Which means that you get the same can of oil each time, with the same protection each time. You add four grams of this and 2 grams of .....
regular oil is refined. You start out with Crude that must be tested to determine its chemical properties as I am sure not all crude is the same to determine how much refining etc Which makes it subject to variations in structure. Alittle help Chemical engineers or mooon shiners. Which doesn't mean it is a poor product but rather something that is refined until it falls between a range of set factors. WHere as the synthetic is perfect every time and isn't on the low end of zinc or moly or whatever oil characteristic sometimes.
My oil background is alittle rusty but hands down synthetic is the way to go. But if you change your oil every 3k or 3 months and are not abusive a good regular oil will be fine I guess.
Couple more things. In every car that I switched from regular oil to synthetic there has beena noticeable diference in performance. They felt smoother and had more power. Believe it or not my wifes 2001 4 cylinder cavalier was night and day different after the switch.
I wish I could have taken pics of my friends regular oil 4.3 versus my synthetic 4.3 engine inside when we did intake manifold gaskets. His was full of scally sooty deposits all over the lifter valley. Actually looked like someone poured burnt wood pieces inside his engine. But no lie my synthetic oil engine was clean and did not have any deposits. And he is a meacahnic that changes his oil regularly. ANyway thats my two cents.
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JJG
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