Carl'sMJ Posted September 28, 2010 Posted September 28, 2010 Like the topic says, I've been considering switching over to synthetic oils and I am considering doing so in the motor, trans, and diff. I've been doing some research on the site here and it seems to be a good choice... However, I'm still trying to see how much of a benefit it would be for me and my application. I'm also concerned about developing leaks. I have a 1992 (that splits time as a DD) with a 4.0L that has 126,000 miles on it. AX-15 5 spd. and Dana 35 with Trak-Lok. I change all the oils on a regular servive interval and try to use quality oils and filters. I've been using Castrol GTX 10W-30 and a Wix filter in the motor. I've heard that it may help to use a synthetic blend and then go to a full syn to help avoid leaks... Any truth here?
A-man930 Posted September 28, 2010 Posted September 28, 2010 Valvoline Max Life synthetic blend/full synthetic are both designed for older engines. That would be my suggestion.
wvzj Posted September 28, 2010 Posted September 28, 2010 Check out this website http://www.bobistheoilguy.com/cms/ there is a plethora of good info on here
Comanche County Posted September 29, 2010 Posted September 29, 2010 Mobil 1 full synthetic only for my baby.... Much better engine protection, but the downside is synthetic is better at finding leaking seals. If your valve cover, oil pan or rear main leaks, fix it, or it will leak worse with full synthetic.
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