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When refilling and you get the jeep to the specified temp, when checking to see if it’s full, do you leave the jeep on when you take out the fill plug to see if anything comes out or do you turn it off? Just don’t know if it’s ok for the plug to be out while the jeep is running.

Have you changed the oil in the ZF8 yet? Also planning on doing it on mine.

I was getting the free oil changes from the dealership and they way over tightened the oil plug. Nothing could get it off and it eventually stripped. Even after I took the pan off, I couldn’t get the plug off.

No the oil indicator on my dash said it was at 0% and time for an oil change. Just came back from a long off-roading trip. What are the specifications of a 29 grade oil? Where could I find them?

You are right. I guess I’m looking for the best oil that is also cost efficient.

So how would you go about seeing which one worked better?

Appreciate the feedback. This is the first time I’ve done an OCA so I’m open to feedback/criticism. You are right though though the numbers do look good. I just was thinking that they recommend an OCI of 15k for extreme conditions and mine was at 6k. I don’t think it would have made it. Could...

What’s an oil sump?

Below is the OCA using Amsoil SS 0w20 for about 6k miles in extreme terrain towing a 5000 pound trailer in mountains, desert and extreme cold/heat. I’m most curious on why the viscosity is off. The higher silicon can be attributed to changing the oil pan and the silicone that was used to make...