Ford Mustang: FOLLOW-UP - problems switching from regular to synthetic oil

Basically..if you're leaking. FIX THE LEAK!

Oil does not cause leaks....synthetic oil does not cause leaks...

Synthetic oil cleans much better than regular oil. Dirt acting as a
"seal" is removed. That is your leak. Dirt however is not supposed to
be a seal. This means, the gasket in that area is shot already anyway.

Replace whatever gaskets are leaking....

Stephan

Righto...

....I work at a wally world in TLE, so I flushed the engine with about 10
quarts of pennzoil before I put in the Mobil 1, and like you said, it's not
like it made new problems, it was existing problems...i just thought any
layman should know that this may be an issue when they change (or get an
engine flush i suppose, for that matter!)

- Nick

"Backyard Mechanic" <com> wrote in message
news:168.3.44... 
is 
Flush" 
and 
with 

On Fri, 22 Aug 2003 21:57:43 -0500, "Nick D." <com> wrote:
 

Hey, another Wally World guy! The WW here near Woodbridge, CA just started
carrying Mobil One Synthetic in 5-qt. jugs for a mere $19.05 each. I don't
care for the clientele, but they DO save me serious money on M1 and Motorcraft
820-S filters.

That first shot of synthetic oil will clean more gunk out of the internals
than 100 back-to-back changes using Pennzoil ever will. The first 3-4 changes
using Synthetic will come out looking awful; after that, it will start looking
more like light honey at each change, indicating that the inside of the engine
is finally cleaned out. If you have seals that need replacement, you'll know
pretty quickly, as the varnish and gunk that has kept them glued together for
so long will dissolve.

A small price to pay for cooler internal temps, superior lubrication and a
cleaner block.