Hi Guys. I have a Mazda MX6 2.5 V6 manual. Has about 140000km (~88000 miles). I need to change gearbox fluid, and I want to use a Synthetic fluid. The manual and FAQ's for the car say it needs a 75W90 GL4 fluid. They say if a GL5 is used, it must be compatible with brass/bronze synchros. Some mechanics told me to use ATF in the gearbox
.
There are very limited choices here. Some brands which are brought in only stock engine oils, not gear lubes eg. Amsoil. So far I have come across these and wonder what you guys think:
- Shell Spirax. Problem is the FAQ's suggest 75W90 but the Spirax 75W90 is GL5
- Royal Purple Max-Gear 75W90 or Royal Purple Synchromax
Cheers,
X
There are very limited choices here. Some brands which are brought in only stock engine oils, not gear lubes eg. Amsoil. So far I have come across these and wonder what you guys think:
- Shell Spirax. Problem is the FAQ's suggest 75W90 but the Spirax 75W90 is GL5
- Royal Purple Max-Gear 75W90 or Royal Purple Synchromax
Cheers,
X