0W Mobil 1 - Engine oil

[jaykay]

This a basic question .....but why have many gone away from the standard 0w40 that Porsche recomends? I am about to do a change

[Adam]

Supposedly some other aftermarket companies makes better oil than Mobil. Ask 10 different people what's the best oil and you get 10 different answers. There are never ending debates on this topic if you search it out.

[Samson]

From what I've gathered out of the millions of opinions on the subject, heavier oils like 5w40 and 10w40 are better for the IMS bearing. I switched to Syntec 5w40 last spring and noticed that the engine is quieter on startup. No more lifter? clatter for the initial .5 seconds of run time.

[jaykay]

yeah .....lifter clatter is something i often note. if crank the engine before starting it tends not to be there

[Paul]

The last I checked the stock IMS rear bearing is not lubricated by engine oil.

[Cloudsurfer]

Originally Posted by Paul

The last I checked the stock IMS rear bearing is not lubricated by engine oil.

It's not supposed to be, but the theory is that engine oil gets inside the IMS tube and washes away the "sealed" lubricant, thus leaving engine oil to lubricate the bearing (however, without sufficient flow to carry away deposits, hence why it is argued that more frequent changes are good).

Modern Mobil 1 is not what it used to be. IMHO, there are better oils out there.

[jaykay]

yes I thought it was sealed too...

[TRawls]

Originally Posted by Paul

The last I checked the stock IMS rear bearing is not lubricated by engine oil.

Is this something that you check frequently?