Synthetic leaking thru good seals is an internet myth. If the seal was good to start with, synthetic oil won't leak thru either.

GL-4 Gear Lube

Last edited by klhansen; 09/24/2020 10:48 PM.

Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.