50/50 MT90 and light shockproof
#1
Retired Mech Design Engr
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50/50 MT90 and light shockproof
A couple of on-line houses (Bofi and Flyin Miata) are recommending 50./50 Redline MT90 and Redline Light Shockproof for 5 and 6-speed XMSNs.
I know Joe had a 6-speed fluid thread a couple of years ago, but I cannot find it, only Hustler's old thread(s).
Any thoughts on the above mix? Experiences with it.
DNMAKINSON
I know Joe had a 6-speed fluid thread a couple of years ago, but I cannot find it, only Hustler's old thread(s).
Any thoughts on the above mix? Experiences with it.
DNMAKINSON
#6
I put Motul Gear 300 in my 6 speed and Torsen last summer.
There was an immediate improvement in smooth shifting quality but it didn’t last long before getting notchy again, especially 1st - 2nd.
I more recently swapped to Castrol SynTrans 75w-90 GL4 (99% sure it’s rebranded Motorcraft unicorn fluid) and it was the same result.
Great shifting to start with but not long lasting. Maybe my 6 speed is just too worn out and the friction modifiers can only do so much.
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