|
|
SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
Post Reply |
|
Thread Tools | Search this Thread |
02-21-2017, 11:01 AM | #1 |
Second Lieutenant
74
Rep 207
Posts |
Long term experiences with Royal Purple
The car this pertains to is a 2003 3.0 6-speed.
I purchased the car about a month ago with the relatively low mileage (if I were in Canada would this me kilometerage?) of 70k, and as seems to be par for the course, it has some notchiness going into 1st and 2nd gear. Did some research and found that our trans fluid is supposedly "lifetime", but also that many people ended up doing regular changes every 30k-60k miles. At 70k with it assuredly never having been changed before, I decided this may be a good idea to help smooth things out. Continued on with my research and found a good number of people suggesting great things from Royal Purple Synchromesh. So yesterday I go to my local oil lube shop (9 minute oil lube in palo alto... place is legit for any locals who have never been) with 2 quarts of RPS to get the job done. When I pull in the owner is there, I tell him what I want done, and he puts a hold on the whole thing. Takes the RPS to his "master mechanic" to discuss whether it will be a valid replacement for OEM, and comes back to talk to me. We discuss this choice for at least 15 minutes and he is very reluctant to use my fluid, but eventually relents and says he will do it for free as he doesn't want to be held accountable if anything goes wrong. Fluid is changed and I feel like I have noticed slightly smoother shifts... however it surely could all be in my head. Anyways, with all this trepidation on the shop owners part, it makes me wonder if people have had any long terms negative effects when using Royal Purple Synchromesh. Anyone care to chime in? |
02-21-2017, 11:54 AM | #2 | |
Lieutenant General
7736
Rep 12,405
Posts |
Quote:
Honestly, my Z4M had really old trans fluid and putting some fresh Redline helped with the shifting tremendously. I really don't think it's in your head. I absolutely do not believe in Lifetime Fluids
__________________
Current:
16 F82 M4 GTS, Black Sapphire/Black, DCT 08 E92 M3, Sparkling Graphite/Bamboo Beige, 6MT 07 E85 Z4M Roadster, Alpine White/Red, 6MT 99 E36 M3, Techno Violet/Dove Grey, 6MT |
|
Appreciate
0
|
02-21-2017, 04:31 PM | #3 |
Colonel
1214
Rep 2,935
Posts
Drives: Anything
Join Date: Apr 2010
Location: SoCal
|
I asked the same question last year => http://www.zpost.com/forums/showthre...ht=synchromesh
I am very happy with the switch to RP, for what its worth. |
Appreciate
0
|
02-21-2017, 07:19 PM | #4 |
Second Lieutenant
105
Rep 233
Posts |
Royal Purple is all I run in everything I own. I have not had a single problem with Synchromesh after several years of use in my 3 series, truck transfer case, and now my Z trans.
|
Appreciate
0
|
02-21-2017, 09:25 PM | #5 |
Captain
249
Rep 758
Posts |
I think the real issue was with using ANYTHING non-OEM specified and the worry it would come back on them if you had a tranny issue after the fluid change. Most shops have a policy of not installing any part, fluid, etc. brought in by a customer.
And, you're not imagining the smoother shifting. Even a change of the OEM fluid at your mileage would have yielded an improvement, but you would not have liked the price.
__________________
Top Down 365
|
Appreciate
0
|
03-10-2017, 12:12 PM | #6 |
Private First Class
32
Rep 194
Posts
Drives: 06 Z4M Roadster
Join Date: Nov 2016
Location: Largo Fl
iTrader: (0)
Garage List 2006 Z4MR [0.00]
1972 For Sale Datsun [0.00] 2001 Dog/kayak haul ... [0.00] 2010 Daily Driver H ... [0.00] |
Upcoming project for me, just ordered my Blackstone pump/6 pack of oil/tranny analysis and 3 Dimple magnets from BavAutoSport, change out tranny and diff, researching now if there are benefits to using aftermarket. Are you saying OEM is MORE that RPS ?
__________________
Topless and getting my degree
|
Appreciate
0
|
03-10-2017, 12:37 PM | #7 | |
Captain
249
Rep 758
Posts |
Quote:
RPS is $20 a quart via Amazon Prime.
__________________
Top Down 365
|
|
Appreciate
1
JJZ4MR32.00 |
03-10-2017, 03:49 PM | #8 |
Colonel
1214
Rep 2,935
Posts
Drives: Anything
Join Date: Apr 2010
Location: SoCal
|
If you're happy with the way your transmission feels, then I would just get the Pentosin as per dc_wright's suggested. I don't see any reasons to veer away from OE unless you don't like how it shifts
__________________
|
Appreciate
0
|
03-10-2017, 08:34 PM | #9 |
Private First Class
32
Rep 194
Posts
Drives: 06 Z4M Roadster
Join Date: Nov 2016
Location: Largo Fl
iTrader: (0)
Garage List 2006 Z4MR [0.00]
1972 For Sale Datsun [0.00] 2001 Dog/kayak haul ... [0.00] 2010 Daily Driver H ... [0.00] |
I'm not real happy with the shifting, though I've gotten a lot smoother with more driving. There is a lot of opinions on fluids I've been reading about today. Saw some great reviews on Motul Gear 300 75W90, which apparently you can use in the tranny AND diff.
__________________
Topless and getting my degree
|
Appreciate
0
|
03-11-2017, 11:33 AM | #10 | |
Colonel
1214
Rep 2,935
Posts
Drives: Anything
Join Date: Apr 2010
Location: SoCal
|
Quote:
Are the Motul reviews on a Z4M or equivalent transmission? If it's not in a similar transmission, then the reviews may not necessarily applies as the "feels" of the transmissions won't necessarily transfer over |
|
Appreciate
1
JJZ4MR32.00 |
03-12-2017, 12:10 PM | #12 |
Private First Class
32
Rep 194
Posts
Drives: 06 Z4M Roadster
Join Date: Nov 2016
Location: Largo Fl
iTrader: (0)
Garage List 2006 Z4MR [0.00]
1972 For Sale Datsun [0.00] 2001 Dog/kayak haul ... [0.00] 2010 Daily Driver H ... [0.00] |
CDV will be out in 4 days and counting...also CPV seal installed. Indy said if I wanted new motor mounts, good time to do it all at once. Located from Tri City Bolt & Screw St Pete 10.9 bolts for motor bracket mounts ( known weak point/passenger break ) So I went with Vibra Technics and the Rouge Engineering Tranny mounts. I feel like the drive train will be as solid as possible. Then I thought as a final touch, new tranny/diff fluid. Not sure about getting all 3 Dimple magnets, but I feel it would give me some piece of mind that I've done everything to have a healthy drivetrain.
__________________
Topless and getting my degree
|
Appreciate
0
|
03-20-2017, 04:43 PM | #13 |
Second Lieutenant
25
Rep 211
Posts
Drives: Z4M roadster
Join Date: Apr 2012
Location: Niagara, Ontario
|
I was about to use RP for my gearbox and diff, but chanced across a post on another forum where the owner was using RP in their diff and a Blackstone report noted significant wear. He changed to Redline and the next Blackstone report was fine......
I went with Redline. Unfortunately I don't recall the location of the post.
__________________
2006 Z4M roadster. Interlagos Blue, black extended leather with carbon trim. Apex EC7 8.5/9.5 x 18 rims, Strong Strut brace, KW V3s with RE rear shock mounts, Vibra Tech and Rogue engine/transmission mounts, CDV delete.
|
Appreciate
1
JJZ4MR32.00 |
03-20-2017, 07:04 PM | #14 |
Private First Class
32
Rep 194
Posts
Drives: 06 Z4M Roadster
Join Date: Nov 2016
Location: Largo Fl
iTrader: (0)
Garage List 2006 Z4MR [0.00]
1972 For Sale Datsun [0.00] 2001 Dog/kayak haul ... [0.00] 2010 Daily Driver H ... [0.00] |
Yeah, I've found a mixture of different reviews on the two
__________________
Topless and getting my degree
|
Appreciate
0
|
03-21-2017, 07:28 PM | #15 |
Monkey Marshall
637
Rep 218
Posts |
You know I've ran MTF in my RX8 and RP in my old Z3. I like MTF better personally. I'll keep RP for my oil changes, but use MTF in my transmission when it's due.
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|