Switching to synthetic oil in high mileage F

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03-01-18, 05:54 PM

#31

s2kjer

Driver

Join Date: Oct 2014

Location: Arizona

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Quote:

Originally Posted by Eurofreak

Well, I'm pretty sure I have a leak now. I updated my original post and will update again once I have a chance to get under the car.

Sorry to hear that.. I was hoping my post would of steered you away from doing it

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03-02-18, 11:56 AM

#32

Piston1047

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Location: Georgia

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Quote:

Originally Posted by F_Throttle

Is there any benefit to running the 'high mileage' version of mobil 1?

Higher mileage oils usually just have additives for seal swell, to leaking from worn seals. So if you concern is oil leaks , this might help.

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03-19-18, 11:08 AM

#33

artbuc

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A former visitor here, Code58, reported excellent results using Auto RX to stop rear main seal leak. He was, IMO, the most knowledgeable person who ever posted on an auto DIY site. The only other person who comes close is Trav over on BITOG.

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03-19-18, 02:40 PM

#34

lobuxracer

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Quote:

Originally Posted by artbuc

Adding seal swell is never my first choice. If the seal is old, hard, and brittle something like this will breathe a little more life into it, but it won't be for a long time. If you're deciding between funding gas in your car and fixing an oil leak and not being able to drive, sure, throw something in the oil, but otherwise, adding anything to a modern oil is a total crapshoot and I wouldn't risk it.