Any reason to NOT use synthetic oil in the axles?

[Blazer3664]

From a wheelers point of view, axles are the one place I stick to dino oil. Any water crossings, and they are most likely to get contaminated. When I wheel thru water/watery mud, I check the axles regularly. Any sign of milky oil and they get changed. Mainly a cost/benefit/life expectancy (of the oil) thing.

I do like synthetics for engine, and trans though. If you get in water high enough to question intrusion there, you probably knew that you where taking a chance going in. x_x

Old seals sometimes will leak when they weren't with non-synthetic

Yep, synthetic will find any seal that is the least bit questionable.
Good excuse to fix em.

Jim

[lindel]

Contamination is really the only valid reason I see not to use synthetics in your axles.

[Southern Gorilla]

I don't see why contamination would be a reason to run regular oil. Contaminated synthetic will be better than contaminated regular.

I also don't understand why Currie would be opposed to synthetic. I've never seen any test anywhere that showed regular oil being better than synthetic in any way.

I ran synthetic for four years in my International 9900ix. It was in both axles and the transmission. I will definitely run synthetic in my Cherokee when I get to that point.

[fulsizjeep]

When I change axle lube, Royal Purple goes in.

[jsinajeep]

When I change axle lube, Royal Purple goes in.

And I bet you will paint the axle purple also

[Stuka]

I don't see why contamination would be a reason to run regular oil. Contaminated synthetic will be better than contaminated regular.

I also don't understand why Currie would be opposed to synthetic. I've never seen any test anywhere that showed regular oil being better than synthetic in any way.

I ran synthetic for four years in my International 9900ix. It was in both axles and the transmission. I will definitely run synthetic in my Cherokee when I get to that point.

If you axles get contaminated regularly, it means you change it often. So a lot of the advantages of synthetic would not be met. Not to mention the cost difference.

[Southern Gorilla]

If you axles get contaminated regularly, it means you change it often. So a lot of the advantages of synthetic would not be met.

Ah. Good point.

[Gumby]

I would say the earlier you put in the synthetic and work out the leaks the sooner the repair and replacement cost gets re-couped.

[kirk]

Interesting, considering I'm trying to revive my '87, and have no baseline for previous maintenance, swapping all the fluids to synthetics is on my list. Glad to hear its acceptable.

[fulsizjeep]

I happily use Royal Purple when I change axle lube. If I was doing water crossings a few times a year, I would use dino fluid to save some money because it will get changed regularly.

[HOOT]

Synthetic will clean out some of the old crud built up inside old dino systems. That's why the small leaks possible when switching over. I decided to run the blended stuff hoping it will clean out my axles from the old stuff. I think I have about 6000 miles on them now and when I go through them this winter they will get full synthetic.

After I had a power steering pump freeze one winter I switched it to synthetic. Day and night difference older (semi changed.. I sucked out the res. and refilled it when i bought it the year before) oil and synthetic. By spring all fluids were changed. I run Mobil 1 in the engine. The tranny is the only thing still running stock Janie Juice. I change tranny fluid quite often depending on what the truck has been up to. I'm thinking of going synthetic on it here next as the hard work loads are hopefully behind us.