To Syn Or not to Syn, I like it natural..., How did you do it? Options

[pete-greggers]

The old owner of my car thought synthetic oil was best. From my and Steves readings it is found that synthetic dose not transfer heat well. And that is not good for air cooled moters. (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)

I have heard it is not a good thing to switch.

How do I change form snake Oil to regular?
What weight should I run?

I have a 75, 2.0L, 4 cyl

AM I STUCK WITH SYNTHETIC????

[dmenche914]

i'd be interested in your results that indicate synthetic oil is not good for aircooled engines, this is based on what data?

I have been using synthetic for years in some of my cars, air and water cooled. My Vanagon has 175K miles on it with synthetic since new, pulled teh valve cover off, and the inside is clean and shinny as new, no sludge build up, I think that is a good thing about synthetics, they really do seem to keep the engine clean.

I also recall that Mobil One makes a synthetic specifically for Vee Twin motor cycles (air cooled), so sythnetic in general must not be too bad for air cooled engines.

I run the thicker weights in my aircooled cars, Mobil one 15w-50, or Valvoline synthetic 20w-50 work well, holds good oil pressure on my used engines. You could probably use a lighter wieght on a new tight motor.

I do not use synthetics in my 61 Bug, cause it ain't got no fancy full flow filter, so i change oil every 1500 miles or so, synthetic is too expensive for that change interval.

You should have no problems running synthetic oil, just pick the right weight, and confirm with an oil pressure reading. An old leaky or oil burning motor should probably get regular oil, for cost reasons.

I see know reason why you cannot change oil types, they all are supposed to be compatible with each other, and after draining a hot motor for a while , most of the oil will be out, if you get freaky about mixing, then change the oil, with a long drain period, then drive the car a bit to heat it up again, re-drain, and re-fill again, that ought to get most all traces of the synthetic oil out of your engine.

good luck