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Thread: Royal Purple Trans/Gear oil
04-11-2006 09:33 PM #1
- Minneapolis, MN, United StatesMember No: 34931
- Join Date
- Apr 2002
- Rep Power
Royal Purple Trans/Gear oil
I used Royal Purple Synchromax in my E39 540-6 & was happy with it.
I get conflicting input on their transmission oils for my E34///M5.
One rep states to use Synchromax for transmission & Gearmax 75w90 for differential.Another states Gearmax 75w90 for both.
In Roundel Mike Miller dismisses the product,because the name reminds him of a candy or drink from the old fasioned soda fountain shop.
What is the right RP product for this application.
'91///M5 Blk/Blk Coming out of winter storage.
04-16-2006 10:10 PM #2
Re: Royal Purple Trans/Gear oil
that depends on what viscosity oil is prescribed for the E34 M5 5-speed gearbox. My M5 has the Getrag 280 6-speed which calls out ATF as the proper lubricant. Poyal Purple specifies their synchromax product for manual gearboxes using ATF.
I thoroughly Mike Miller's column, but disagree with his assessment of Royal Purple products. I'm a happy customer..
05-01-2006 10:44 PM #3
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