I put Amsoil in my Diff at 3k of miles, now have 18k on the car with about 5 track events since and many autox's. Wonder if I should swap it out....even though Amsoil says nah...

 

^ do you ever get a "stinky diff" ?

i did... so now i run 75w140 and a nismo cover...

if i didn't have a carbon clutch diff, i would do 15k or so before changes.

 

could you describe what a stinky diff smells like? is it sorta a burning chemicle smell? i have a feeling i need to change mine. Im getting a strange smell from my car after driving and i cannot tell where its from.

 

It smells like vag when you change the oil

 

its retarded, retart! LOL!

 

first, this would probably not happen on the street. on the track, high cornering g's and massive strain on the diff make the fluid boil out of a breather hole in the pumpkin. smells horrible !



( i hope i never smell a vag like that )

 

living in az and the summer is HOT is it possible that could cause such heat? I also drive alot of miles daily and havent changed my diff since i bought the car at 42000 miles and i just hit 81000.

 

haha i mean it smells like stinky vag.

I plan on getting the carbonetic diff. I will have a nismo finned cooler on it, but hwo knows how effective that is. I was wondering if the overheating is a carbonetic issue or a standard issue with all diffs..

 

all diffs .... nismo cover helps, 75w140 helps more

 

Ester is a substituent on a compound, which has an oxygen molecule bonded to a carbon as a ketone immediately adjacent to another oxygen that is bonded to -R (usually shown as RCOOR). Without going into bunch of useless, technical crap, this changes the chemical properties of a molecule due to the O's not having H's.

I'm assuming that this isn't a necessity and only is the latest technology pushed upon the consumers for greater profit, but I could be wrong.

 

i tried that all the dealers say they dont have enough of the oil to sell by the case. if i could get a case i would change it myself.

 

OP you can buy motul oil easy enough. 300v and 8100 are both 100% synthetic ester based.

 

some synthetic will do you fine. its just hype

 

Well I usually don't smell my diff unless I drain the fluid. I haven't drained it since or check it since then. But I know on my truck the Amsoil stuff never really stunk when I drained it like the factory fluid did.

 

Actually some synthetics are causing issues with the G37 and 370z because of the Ester requirement. They switch back to Nissan Oil and it works fine then.

 

i going to use the ester oil for now because the 370 is new to the market.i got the 100 for the oil change but i dont have the thousands for a new motor.

 

I found this:

http://www.google.com/search?source=...=Google+Search

When google gives you an error change 350 to 370

 

Oi!! forget it, there is an article on 370z that explains everything pretty well. on Page 3 of 4 it clears things up.

 

my wife has a 07 benz b200 turbo and it costs 300 for a change (25k miles) it only takes 1L of oil!

 

^ in us, we call that a golf-cart