Royal Purple Synchromax
Instructor
Joined: Oct 2008
Posts: 181
Likes: 0
From: Temecula Ca
I just drained and flushed mine today. Used the royal purple. Shifts are as smooth as butter now. A million times better. But I also installed a new twin disk clutch, pilot bearing, release bearing so don't know if the rp made that big differnce.
Burning Brakes
Joined: May 2008
Posts: 1,147
Likes: 1
From: Mohegan Lake New York
I'm an old guy and a lifelong stick shift guy,synthetic made a huge difference in the old 4 speeds (muncies ,super t 10's and hemi 4 speeds) but they used 90 weight so when I decided to switch to synthetic in my 03 z/06 as the factory oil was lightweight I didn't expect much and boy I was certainly surprised,It made a noticable improvement.For the cash outlay and labor involved it's a no brainer ,make the switch you won't be disappointed
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Verdad Gallardo
Pro
Joined: Apr 2008
Posts: 628
Likes: 4
From: Columbia SC
When I got my low-mile manual trans '03 Coupe two years ago I was absolutely appalled at how badly it shifted. I truly thought something was wrong with it, it was so balky, notchy, heavy, hard to find gears, etc. I arranged to drive a couple of other C5 manuals and found that they all sucked. I was actually considering dumping the car because of the shifting. I switched to RP Synchromax and while it did not work wonders, it was an improvement for not much $.
Melting Slicks
Joined: Oct 2007
Posts: 2,798
Likes: 8
From: It's true money can't buy happiness, but it is more comfortable crying in a Corvette than on a bicyc
St. Jude Donor '13
Wow and not a mention of paper blocking rings. Things are a changing. I run the RP in my 99 and I'm happy with it.
Safety Car
Joined: Jan 2000
Posts: 3,904
Likes: 250
From: Orlando FL
I thought I was ready for a rebuilt. Had to double clutch to get it in gear at a stop. Very hard to get into 2nd at anytime. I changed to Royal Purple at 90K miles, within 20-30 miles it felt like I had a new transmission. I am at 107K now, still shifts like new.
Thread Starter
Instructor
Joined: Feb 2006
Posts: 233
Likes: 1
From: Port Washington Wi.
Thanks for all the input, I have a 2000 with a little over 40k miles so the fluid is ten years old. The shifting can be notchy at times. It sounds like the majority are happy with it and only a few not so much. I will give it a try. Thanks
