Royal Purple?

*ka24e* · Feb 25, 2009

So about 2 weeks ago I put Royal Purple max gear 75w-90 in the tranny. After reading up on it and finding out alot of people run it the 300z's and 240's I thought I would give it a try.
On the first drive I noticed it was a little harder to shift than it was before? No leaks, and the tranny was full of gear lube.
After a while I noticed it was progressively getting worse and worse, I switched to a different gear lube and it helped a bit.
Any body run Royal Purple in there trannys, or maybe mine was just a coincidence?
On a side note, my bro started using 10w 30 RP and his oil consumption has gone up considerably.
I also hear that there purple ice coolant additive is corrosive to aluminum.
Opinions?

CrazyMAN69 · Feb 25, 2009

i run royal purple in my tranny seems to work just fine for me.

*ka24e* · Feb 25, 2009

Hmm. Maybe it was just the trannys time to go. It just seems odd that the day I put it in my tranny goes to shit. If I double clutch its shifts fine, means my syncros are probley shot.
I would like to run redline or amsoil, but no body stocks it.

1SXY240 · Feb 25, 2009

hmmm this kinda makes me nervous because i am putting my dual cam in my 90 shell next week and i bought 75w-90 RP for my tranny...hopefully it was your tranny lol

Angels12 · Feb 25, 2009

hi, u put gl-4 or gl-5???? i dont know if truth, but im someplace i read that gl-5 damage the syncronizers of the tranny. if u use gl-4 it supose theres no problem, i dont know. im trying to find redline but i can find it only in on-line stores.

*ka24e* · Feb 25, 2009

RP is a GL-5. I've heard conflicting stories. I heard that GL-5 is the same as GL-4 with more extreme pressure additive (EP), but I also heard GL-5 is totally different than GL-4.
I also heard that GL-5 will only eat yellow metals above 225 degree F.
So IDK at this point. I wasnt very impressed with RP, considering it was almost $15 a quart.

Car Crazy Curry · Feb 25, 2009

It would be nice to get a complete answer to this as I will soon be rebuilding my engine and swapping out the trans for a newer one and was planning on using RP when I do.

just2asian · Feb 25, 2009

If you guys live somewhere where there is a summit racing close by, they stock redline.

CrazyMAN69 · Feb 25, 2009

i put in royal purple and lucas oil addiative and my tranny is great.

Scoot · Feb 25, 2009

I used RP, it wasn't any better then what I had in it before which I'm assuming was just generic gear oil. I'm waitin for my next Clutch change to switch to AMSOil as I heard it's like having a whole new tranny...

*ka24e* · Feb 25, 2009

http://www.amsoil.com/lit/g2457.pdf

Long read, but has lots of info.

Scoot · Feb 25, 2009

^Good read...

Angels12 · Feb 27, 2009

its good to know that stuff, thanks

Slyde14 · Mar 2, 2009

i have royal purple in my tranny and its an improvement over the previous oil. shifts are noticably smoother.

TwoFortySX · Mar 3, 2009

I have been running mobil1 GL-5 in my tranny for about a year. Honestly, It feels like garbage in there.

I just bought Redline MT-90 for the transmission and lightweight gear oil for the differential. Im going to be swapping the oils over as soon as its gets a bit warmer. On another note, I have loved running mobil1 5w-30 in my KA with a K&N filter.

ohh well. I let you guys know what I think after I swap the oils.

*ka24e* · Mar 3, 2009

+1 on the mobil 1 oil. I switched to 15w-50 mobil 1 full synthetic (used dino 20w-50 before) and my KA loved it. I used to burn oil pretty heavy on WOT, but after switching I haven't noticed any oil burning, and oil consumption went way down.

carps13guy · Mar 3, 2009

+2 for mobil1 5-30. i have 190k on my ka motor and i barely burn any oil. but this is a good thread for me cuz im in the process of getting my car ready for a local autox event and my trans has been shifting like crap lately. i am friends with the local distributor of redline so naturally i was thinking of putting that mtl-90 in my trans, but after reading that amsoil article i might consider going with that.

Scoot · Mar 3, 2009

Thats why your trannies suck, your using GL-5 Tranny Fluid, our Trannies require GL-4 Specifically (Softer metal) thus the GL-5 fluid eats at the GL-4 parts...

TwoFortySX · Mar 3, 2009

240-kid said:
Thats why your trannies suck, your using GL-5 Tranny Fluid, our Trannies require GL-4 Specifically (Softer metal) thus the GL-5 fluid eats at the GL-4 parts...

I know this, now, but did not at the moment when I changed the oil. I doubt there is damage because I barely put 3000 miles on my car last year. If there is I'm not worried, KA trannies are a dime a dozen.

nissanfreak8 · Mar 3, 2009

Hmm, notes to take...
Mobil synthetic and K&N filter, already done.
Redline or amsoil in trans and diff.. GL4 only.

Royal Purple?

ka24e

CrazyMAN69

ka24e

1SXY240

Angels12

ka24e

Car Crazy Curry

just2asian

CrazyMAN69

Scoot

ka24e

Scoot

Angels12

Slyde14

TwoFortySX

ka24e

carps13guy

Scoot

TwoFortySX

nissanfreak8

Top Contributors this Month

Recommended Communities