Differential Oil requirements

cre · 08-29-2013, 03:31 AM

Sorry I didn't see your post sooner. Yes, it can make a big difference. Some oil blends have friction modifiers already mixed in and it's often sufficient... but sometimes it's not enough or the gear oil doesn't have any additives at all. I'm *almost* surprised the shop didn't check after the fluid change.

Bill UK · 08-30-2013, 07:44 PM

The correct Axle fluid is Castrol Axle Z Limited Slip 90 (previously known as LS 90) no additives required,

Karl · 09-21-2013, 02:32 PM

Excuse my ignorance, but what other brands of Differential fluids would you recommend? Are there any Synthetics that would work (better)? Do I have to get the additive?
I have a 87 Supra Turbo.
And, while we're on the subject; What brand Tranny Fluids would you recommend? Any Full Synthetics?
Thanks,

08-29-2013, 03:31 AM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Sorry I didn't see your post sooner. Yes, it can make a big difference. Some oil blends have friction modifiers already mixed in and it's often sufficient... but sometimes it's not enough or the gear oil doesn't have any additives at all. I'm almost surprised the shop didn't check after the fluid change. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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08-30-2013, 07:44 PM	#2
Bill UK AEM EMS Join Date: Jul 2006 Location: UK Posts: 891	The correct Axle fluid is Castrol Axle Z Limited Slip 90 (previously known as LS 90) no additives required,

09-21-2013, 02:32 PM	#3
Karl Stock Join Date: Sep 2013 Location: Pittsburgh Posts: 7	Excuse my ignorance, but what other brands of Differential fluids would you recommend? Are there any Synthetics that would work (better)? Do I have to get the additive? I have a 87 Supra Turbo. And, while we're on the subject; What brand Tranny Fluids would you recommend? Any Full Synthetics? Thanks,