I'd like to through in one real-world measurement into this synthetic
oil debate. My old autocross car is a 1990 Miata which I raced from
1989-1993. I was concerned that the racing would cause extra wear on the
engine so I switched over to RedLine synthetic oil at about 30k and have
stuck with it ever since, changing my oil every 5-6,000 miles. At about
151k the engine burned a exhaust valve when the header bolts loosened up
causing a lean condition. After I brought it in I got a call from my
mechanic wondering what type of oil I had been running. Seems that the
cylinder bores had *no* wear on them! He said that he could not measure
any wear at all and that the original cross-hatching could still be
seen. He had never seen an engine like that before and was amazed.
Perhaps I am just lucky but this is enough proof for me of the
superiority of synthetic oils and RedLine in particular. I plan to keep
using it in the Miata (now at 171,000 miles and still going strong) and
in any future vehicles I buy.
A satisfied customer,
- Alan Dahl
--------------
Alan Dahl home:
adahl@eskimo.com
Federal Way, WA, USA work: aland@bestnet.com
http://www.eskimo.com/~adahl ICQ 52688023
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