Going Purple
Thread Starter
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Going Purple
So... I've done a lot of research and have been reading a lot on here, and I've decided to change my motor oil, differential oil, and tranny fluid over to Royal Purple. I've got just over 60K on my 01 Coupe now and I want to make sure I'm giving her the best protection possible.
My 1 - 2 shifts are starting to get a little stiff and I'm worried that I might have a wearing 2nd gear synchro. I typically match revs when I shift out of habit, but I'd rather make that synchro last as long as I can. A lot of people have commented that their transmission feels like a brand new one when they switch over to Royal Purple, I'm skeptical, but optimistic.
I've also recently noticed a little gear whine (especially in third gear), hence the reason for the switch in diff. fluid. I'm planning on having my old fluids flushed out and the Royal Purple put in on Monday. I'll post again after that with whether I notice any difference.
My 1 - 2 shifts are starting to get a little stiff and I'm worried that I might have a wearing 2nd gear synchro. I typically match revs when I shift out of habit, but I'd rather make that synchro last as long as I can. A lot of people have commented that their transmission feels like a brand new one when they switch over to Royal Purple, I'm skeptical, but optimistic.
I've also recently noticed a little gear whine (especially in third gear), hence the reason for the switch in diff. fluid. I'm planning on having my old fluids flushed out and the Royal Purple put in on Monday. I'll post again after that with whether I notice any difference.
Last edited by cdkcorvette7; Nov 25, 2009 at 12:06 AM. Reason: Pics Added
Life Time NCM #2196
Joined: Sep 2004
Posts: 82,592
Likes: 1,711
From: Converse TX
I have been using Royal Purple in my boosted vette for 15k. Engine oil I change by 2k so no report here. I just did the first MN6 and Diff change, what I noticed was the MN6 was still clean and the diff was dirty so about 15k will be my changes. Better shifts and quieter diff was noted when I first did the change
Le Mans Master
Joined: Oct 2005
Posts: 7,310
Likes: 468
From: Texas Where God intended me to be.
2023 Corvette of the Year Finalist - Unmodified
2022 C5 of the Year Winner - Unmodified
Cruise-In X Veteran
St. Jude Donor '08 thru '11,'22 thru '26
I have been using Royal Purple in my boosted vette for 15k. Engine oil I change by 2k so no report here. I just did the first MN6 and Diff change, what I noticed was the MN6 was still clean and the diff was dirty so about 15k will be my changes. Better shifts and quieter diff was noted when I first did the change
Life Time NCM #2196
Joined: Sep 2004
Posts: 82,592
Likes: 1,711
From: Converse TX
Thread Starter
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Update
So... I had it put in and am very satisfied with the results. The shifts are much smoother and I have much less gear whine than I did before. Overall, I'm very happy with Royal Purple. 
Safety Car
Joined: Aug 2007
Posts: 4,506
Likes: 0
From: This is not a Song, It's an Outburst: Or, The Establishment Blues; Sixto Diaz Rodriguez
I've used RP ever since my rebuild of the engine, about 15k miles now, it's also in the tranny, differential. Very satisfied.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Life Time NCM #2196
Joined: Sep 2004
Posts: 82,592
Likes: 1,711
From: Converse TX
Race Director
Joined: Apr 2005
Posts: 10,179
Likes: 2,306
From: Wesley Chapel, FL Las Vegas, NV
FYI RP got sued and lost for False Advertising
http://www.corvetteactioncenter.com/...vertising.html
http://www.corvetteactioncenter.com/...vertising.html