Well I went with lucas because I know its great with my spartan as far as quitening and limits the unloading.so I didn't want to run two different brands.But if the cheap heavy weight did the same I would run it.

 

Exactly I do the same, all this snake oil sells somehow...

 

There is absolutely nothing wrong with "Coastal" brand products.


They are made by Warren Lubricants, in the USA.


I had Coastal 75W90 in both my front and rear diffs for around 3 years.
I go wheeling often, and when I put my heavier diff covers on this past summer, the old fluid came out looking pretty clean.
I put Valvoline Synthetic 75w90 back in this summer, but I honestly don't really see the need to.


I am currently using Coastal full synthetic 5w30 in my 4.0 also.

 

Good to know.

 

Same here. It's cheap and it works. I also check/change it on a regular basis.

 

Haha. I think that if you offroad, you would WANT the expensive stuff especially in the engine/tranny/tcase. Things get hot when crawling around and synthetic will retain its protective qualities to a much higher extent while hot... I have had a few xjs that have passed the 300,000 mile mark and none of them have ever died from a lubrication caused issue. No blown engine, slipping trannys, nothing. The "if you don't have what I have, you are a mall crawler" is always a valid argument though!

Gear oil I can see if you are frequently in the swamp and need to swap it constantly it might be a good idea to run something cheap.

But you are correct- it is everyone's own choice with what they run. Better protection is better protection no matter if it is a 2stroke or a 4stroke. I will see how long my Stroker lasts running Amsoil for its entire life... It seems like most of them that blow up happen around 150-200k. Granted it is usually shoddy craftsmanship that does it but we will see.

 

Personally I prefer to run 75w-140 or 80w-140 synthetic. Its recommended for heavy duty use in the owner's manual. For light duty use I would use Coastal, MAG1, or whatever the farm and ranch store sells.

 

FYI,
Heavy Duty Use is defined by jeep as "Engaing Four Wheel Drive."