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Anyone use Royal Purple Syncromax in 5 spd tranny?

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BLUE89TURBO

15+ Year Contributor
31
1
Nov 18, 2005
cambridge,
Just like the title says, does anyone have any opinions on this stuff.

I went to the shop looking for Redline MT90 but the Royal Purple was all they carried.

I figure I'll give it a try, unless I hear any horror stories...

Thanks,

Jason

91 TSI FWD 5SPD
 
I did but then I blew the diff up. When I got it rebuilt I filled it with GM syncromesh because it's supposed to be better.
 
I used Royal Purple when I changed out my tranny fluid. It's not bad. It's the only time I've changed it since I bought my car, so I can't compare it to any other products out there, but it was a definite improvement over whatever was in it. I'd use it again.
 
Actually, I have a correction to make. I believe that I actually used Max-Gear, not their Synchromax. It's GL4/GL5 compliant. I forgot they make two different kinds. It seemed to me that the Max-Gear was designed more for transmissions and differentials than the Synchromax. I used 75w90.
 
Thanks guys,

I believe that I actually used Max-Gear, not their Synchromax. It's GL4/GL5 compliant.

Hey MrBoxx

That is what I was wondering about, I bought the syncromax and when I got home I went to their website. I then noticed the maxgear that they sell - it seemed to be more suitable than the syncromax - i think i will return it for the maxgear....

Here are the links to both types:

http://www.royalpurple.com/prodsa/mgeara.html

http://www.royalpurple.com/prodsa/scmax.html


Thanks Jason
 
I use Mobil 1 synthetic in my rear diff, and for my tranny and transfercase I have Pennzoil synchromesh, but I was also thinking of switching to either BG synchroshift or the Royal purple stuff slowboy has on their website.
 
RamenPride said:
:confused: too slippery? the real reason you don't want to use Mobil 1 Synthetic is because it's a GL-5 rated fluid
That's what the guys at TRE told me. I didn't notice it was GL-5 when I put it in and it shifted badly. They told me GL-5 is too slippery and won't allow the synchros to work properly. I put in BG Synchromesh 2 and it shifts like a champ.
 
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