Synthetic in an old car?

I've heard many times before that you don't want to use synthetic oil in a car that has been using regular it's whole life.

This true?

I want to switch to synthetic, but I've got a 200,000+ motor that has never had it.

Ive used synthetic in my car since I got it. It had 141k on it then and was neglected and beat to crap. No doubt it was run on cheap oil that was probably never changed.

I have Royal Purple in a 1959 Buick Electra, with it's original motor. No problems, no leaks.

Synthetic is generally recommended for "high" mileage engines. With the modern synthetics there shouldn't be any problems, except the engine may last longer than you want it to.

The only problem with using synthetics on a old engine, is oil leaks. You may have lots of them or you may not.

Good luck


Travis

I used it for a few years without leaks, and every time I checked my oil I couldn't believe how clean it was. After I developed a leak (no fault of the oil) when the engine turned 200,000 miles, I went back to the regular stuff because I couldn't afford to add the 2 quarts of synthetic every week. There are synthetics and synthetic blends for high-mileage cars. Go for it.

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