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Drain the synth. Refill with 10w40 diesel dino oil plus a quart of dexron and run it for a couple hundred miles. Drain and refill with synth and report back.

Synth leaks easier than dino, so it goes past ALL seals and gaskets easier. The dexron will soften and swell the seals some which will delay the need to do a top end teardown. An added benefit is the high detergent level in the dexron which will clean some of the crud and sludge out.



I have often wondered that about the dexron, my rear main starting leaking the last week think this might be a good way to get a few more months out of it?

1989 Mighty Max 4WD 2.6 Turbo,Auto EFI...megasquirt! 4.62 Rear LSD!
1989 Mighty Max 2WD 2.6 5 speed slammed
1993 Eagle Talon TSI