2.7T and synthetic oil

Brett Dikeman brett at cloud9.net
Mon May 5 01:02:46 EDT 2003

At 12:29 PM -0400 5/4/03, DAK wrote:
>I've run Mobil 1 in all my I5 turbos to date and never had a turbo
>issue. Now, I have a 2.7T and want to run Mobil 1 in there as well.
>I've read a bunch about people blowing turbos on these engines and have
>been chalking it up to running hard without proper cool down after.

I doubt it.  It probably has to do more with failing bypass valves-
Bosch just doesn't seem to be able to make a bloody bypass valve that
actually lasts, which is inexcusable considering how much they cost.
Check yours periodically with a hand vacuum pump- they should hold a
perfect vacuum on the control port.

>Could it also be that the regular oil cokes up more than synthetic?

Synthetic has a higher coke temperature point.

>  I've always heard that synthetic doesn't break down as quickly as traditional


"They that give up essential liberty to obtain temporary
safety deserve neither liberty nor safety." - Ben Franklin

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