Switched to 4.56 gears recently n today went back to the shop to drain n refill the diff fluid after the gears break in period(500 miles).. I purchased the Royal Purple, 4 bottles thinking 2 n some change for the rear dana 44 n 1 for the front dana 30 .. I did upgrade the diff covers to teraflex covers.. My concern is that the rear only took 1.50 to 1.75ish bottles.. The jeep was level and I watched as the tech filled it .. Is such a difference normal? I can't let it go.. Lol.. The manual calls for 2 n some changes liters for the rears.. Im confused .. lol.. Anyone w a similar experience?

 

Did he pull covers ? Or just the drain plug ?

 

just drain it

 

Then that's normal you only fully drain it if you pull the cover

 

thanks for the the response.. now that adds another element of concern.. The initial fluid was regular fluid.. I provides the royal purple synthetic max gears.. Now i got two types floating in there.. Mama mia ..

 

A good clean up is generally recommended after the break in period not just drop and fill. I would not worry about it though just next time do a proper clean up.

 

Nowdays synths and conventional are made with compatable bases. you can mix them with no issues unless your like me and have ODC in which case it will just bug the hell out of you.

 

lmao... yes.. I lost sleep over that crap last night.. Hahahah

 

Don't worry about it, it will be fine. drive the crap out of it!

 

Good to know. I am regearing to 4.56 next month and it's nice to know I should pull the diff cover and give a full cleaning vs just a drain/fill. Thanks!