You are currently viewing our forum as a guest, which gives you limited access
to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join RX8Club.com today!
Transmission and Differential Oil changes..When do you guys perform them ??
My car didn't come with an onwer's manual lol so I'm just wondering when(if you ever have)do you guys change your tranny and differential oils ? I know that if you feel any abnormalities while shifting u would obviously change your tranny fluid....what I mean is in terms of keeping the car healthy(ie. oil change every 3K).
Any tips and advice would be appreciated!! Thanks!
This ad is not displayed to registered and logged-in members. Register your free account today and become a member on RX8Club.com!
Interval depends on how you drive the car.
I might change mine every 10K-15K miles as a daily driver while someone who autox or is an aggressive driver might do it sooner.
And we do recommend changing the oil if you experience abnormal shifting.
__________________ Current Mods: RB REVi Intake & Ram Air Duct, AP Catback Exhaust, MazSport DR Midpipe, AP Pulley, BHR Ignition Coils, BHR/SPEC Flywheel, ACT Counterweight, Exedy Stage 1 Clutch Kit, HD Release Bearing, AccessPort w/MazdaManiac tune, REmedy Thermostat & Water Pump, AFE Short Shifter, Lotek Pod with ProSport Gauges, Axxess iPod Adapter, Illuminated Shift Knob, Bridgestone Potenza RE760, OPTIMA 35 RedTop Battery. Oils: Engine= Royal Purple 5w30, Trans= Redline MT-90, Diff= Redline 75w90
Also depends on your budget. Cheaper if you can do the labor yourself. If you have a garage/space and the tools, there are DIYs on here.
I thought our manuals said every 60K (don't quote me), but at the minimum, I'd change at every 30K servicing along with new spark plugs and coils.
Just to keep in mind. Differential fluid can be GL-5. Mazda now recommends only GL-4 for the transmission in the 2009+ manuals. There is a debate whether GL-5 can be used. Some use it and have no problems. I stuck with GL-4 just in case. Redline and AMSOIL are the most popular GL-4. Do a search.
Last edited by CarAndDriver; 12-01-2009 at 08:27 PM.
I change the trans fluid every year, the rear every other year. That is more than you have to, but maybe that is why my trans has never had an issue in 138,000 miles ??
I agree with Expo (he is a guy who has been there and done that and you can trust his views)...
In OZ I think it is every 40 or 60,000 KMS, 24 or 36,000 Miles.
I use Redline MT90 for trans and 75W90 for Diff, I know after a year and 10,000 Miles later my gear change is not quite a smooth, and I will be renewing soon, even though Redline say their Synthetic Gear Oils are good for 200,000!!