yardie_g37_6mt

iTrader: (1)

This is not a DYI more like a FYI. Change my diff and mt oil this weekend. 32K miles on the clock, bought with 29K miles about 1 mounth now. Err'd on the side of caution and assumed the previous owner did not do any of the 30k suggested maint. Used Valvoline Synthetic Blend 80w-90 for the diff and oem nissan 75W-85 for MT. Glad I did it....oil in the diff was pretty dirty (see pic). MT oil wasn't too bad. Wasn't that difficult (used diy posts) and save $$. For those that keep putting it off....don’t procrastinate. Next on my list…clutch and brake fluid, radiator cap, cabin filter, engine air filter…

JSolo

iTrader: (14)

Did you use new crush washers in the diff/MT or just reuse the originals? Was there another jackstand on the back, or just the one under the diff?

Rad_Slinger

iTrader: (12)

Solo I can't speak of the MT, but I have changed the diff twice so far (once to actually change the fluid, then once to get rid of the royal purple I put in for amsoil)

I personally did the diff with the car on the ground. You can get to everything without it jacked up...and my car is corner balanced to 25 7/8". I did not use new crush washers. No leaks, no problems.

jon23

iTrader: (1)

I re-used my washers, they did not look bad at all. No leaks in at least 4 months after fluids change. Washers are flat, the only one that carries a crush washer is the oil bolt.

It feels so much better DIY uh? Saved some money and made sure our car has good fluids.

Great job OP!


Hey Matt, why did you get rid of RP for Amsoil? I have it on my MT and feels pretty good.

Rad_Slinger

iTrader: (12)

Speed shop where i go told me that RP breaks down really easy and said that supposedly it isn't a true synthetic.

They sell both and the RP was more expensive than the amsoil...even though I didn't buy the RP from them. so I bought some amsoil to change it out just to be safe. Wasn't really a big deal for me...just didn't wanna take the chance of them being right.

jon23

iTrader: (1)

Gotcha! Better safe than sorry right? Does it feel different than RP?

Rad_Slinger

iTrader: (12)

Not really

AMai1215

iTrader: (3)

Whats the oil capacity of the differential? I'd look in the manual, but I don't have it with me.

rpm&my_G35

Fill capacity is 1.5 qts/1.42 liters

https://www.myg37.com/forums/d-i-y-i...-gear-oil.html