Oil pressure ok?

[winddance@att.n]

Auck! I will stop using fram!
SoCal driver: When I tested synthetic oil in my airplane and air cooled motorcycle (88s sportster bored to 1200) they both ran 25 degrees cooler. I think you can expect a longer lasting engine even with water cooled. If there is less heat there obviously is either less friction or a better cooling ability by the oil in air cooled engines.

[AaronM]

Originally posted by turbohead7
A sidenote for all you synthetic users: WARNING, Beware of so called "synthetic" oils. Many petrolatums distribute oil labeled as synthetic when in fact it is natural oil which is only modified or blended. Mobil is one of the few who actually produces a 100% fully synthetic motor oil as labeled on the bottle. Why else would Porsche fill every car since new from 94 and up? As if I had to tell you guys Mobil 1 is the best oil on earth! I have seen first hand the internals of high mileage engines which use this stuff. They are as clean as the day they were built with no sludgy build up that you get with natural oils, regardless of ritualistic oil changes. It can also be used to clean any older engine with this nasty buildup. And it can be mixed with, or used in place of your current oil. Of course, always use thiker oil on older engines, especially leaky ones.

If the oil is not fully synthetic, then it must be labled "semi-synthetic" or "synthetic blend" (or some equivalent). If the oil is labled simply "synthetic", then it's pure synthetic. I do agree about Mobil 1 though. At its price point there is nothing that comes close. AMSOil is very minutely better, but AMSOil is not anywhere near worth the price premium it demands. Also, I have issues with several of AMSOil's advertising claims, some of which I find blatantly deceptive.

If the engine needs thicker oil than is recommended, the engine needs to be rebuilt. Period. The only thing that thicker oil does is mask a SERIOUS problem, it does not fix anything.

Not only that, but these cars recommend 20W50 oil. Good luck finding something thicker.

Aaron

[turbohead7]

Not true at all, Aaron M. Not all fake synthetic oil is labeled semi-synthetic. Let's just say I have the inside scoop from a higher-up @ Mobil 1 Manufacturing who has absolutely no gain in lying to me. I just thought I'd pass this seldom heard bit of information on to anyone who might read my post. You wouldn't believe the crap certain oil big-wigs are putting in bottles and selling to you as "synthetic" at $6.00/qt. But hey, use whatever oil you want; but don't think that just because the bottle says "synthetic" that that's what you're getting. My statement about older engines in no way advised using thicker oil in older engines in need of mechanical repair. I'm not one who believes in the old "Rings-in-a-Can" fix. The bottom line is, if your 1979 911 engine already leaks, 10w-30 synthetic won't do you any favors. And if your 1983 944 has 47,000 miles on all original gaskets with no leaks, 5w-30 Mobil 1 will find some place to sneak out. You see, Mobil 1 synthetic is naturally more "slippery" or "sneaky". This can be a double-edged sword making it an excellent lubricant; but sometimes "finding" leaks that a petroleum based oil of the same weight would not. Now you see why thicker synthetic oil should be used in older engines: It can prevent leaks which have not started yet. There is no oil on the market that can "mask" mechanical wear, and if there was I would not reccomend it to anyone. Also, not all 944 owners use the reccomended weight. People make their own blends, racers change viscosity based on track and temperature conditions, and Porsche has approved Mobil1 synthetic 0w oil for just about any Porsche ever made. I get the zero weight stuff for free and use it exclusively in all my cars. I have some old leaks and some new ones, some I fix and some I live with. But the cars love the stuff and who could say no to FREE Mobil 1? 20w-50 is plenty thick for any car, my advice is for all cars, not just 944's.