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-   -   I changed the redline oil in my trans. (https://www.miataturbo.net/race-prep-75/i-changed-redline-oil-my-trans-67506/)

matthewdesigns 08-02-2012 01:23 AM


Originally Posted by wannafbody (Post 910616)
I don't have a clue what was in my tranny when I bought it but it had to be forced into 1rst and I couldn't shift into 3rd until the car had been driven several miles.

I had this issue with my trans as well...don't remember what the PO said he had put in it but it felt really notchy even when warmed up. Now running Mitsubishi Diaqueen in it and it's like buttah.

Doppelgänger 08-03-2012 02:29 PM


Originally Posted by pmhaddad (Post 910119)
FWIW I put the Motorcraft unicorn jizz in my 6spd. I won't use anything else, ever.

This for me. But mine is daily and was hard shifting with RL. Did this when I replaced the engine 2 years ago and all is still good.

psreynol 08-03-2012 06:20 PM

I'll try one day on track with the amsoil and perhaps it will soak in but if it still sucks Ill try the "unicorn jizz"

absRTP 08-10-2012 08:49 AM


Originally Posted by hustler (Post 909953)
The color of the oil doesn't really tell you much of anything.

However, RL sucks, AMSoil MTG is the way to go. Blackstone told me that two season of track time (~25-30 hours per season) didn't require a change and I should keep going. I had a slightly sticky synchro in 5th, the change seems to have fixed it. Savington and I sustain 300*f+ trans oil temps.

Yesterday I bought 3 quarts of AMSoil 75W90 GL-4, because here in Canada, it's hard to put the hand on the good products....

Should I'll be fine using it or should I bring it back and get something else?

concealer404 08-10-2012 09:09 AM

Ok so should i swap out my new Redline for Motorcraft Unicorn Jizz or for Amsoil MTG?

What about diffs? I put Redline in that, too.

bbundy 08-10-2012 12:12 PM


Originally Posted by hingstonwm (Post 910413)
Anyone have any experience with dog box transmissions and redline shock proof oils? I just put the trans back in, and was advised to run RL shock proof light.

I have run both light and heavy shock proof as well as Redline MT90.
My experiance is it provided no added durability for the transmission got real hot and shifted poorly hot or cold.

Amsoil MTG seems to be better in every measurable way for mazda 5 or 6 speed.

Bob

psreynol 08-12-2012 01:45 PM

at first the amsoil did not seem any better, after some street miles and a session on the track, the car seems to shift fine now. I guess the oil had to get hot and mesh with the gears or something. it may not be 100% perfect but so far it seems much better and no longer something I consider a problem


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