OK to mix Redline MT90 and Royal Purple Max Gear 75W90 in manual trans? - Page 2

Jan 23, 2008 | 09:46 PM

#26

swoope

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From: orlando, fl

Quote:

Originally Posted by Startl_Respons

Just searched BG outside this forum. First, all the reports about Syncroshift are from 4 to 7 years ago on forums such as the Evo forum. Users had mixed results and some people could not find a difference between it and Redline. Furthermore, Royal Purple was never mentioned (my guess is because Royal Purple wasn't available back then). Can't find current user reports, not even on this forum. Very Strange.

Second, the BG website has a bunch of stuff for automatic transmissions, oils and flushing machines. But nothing for manual transmissions and no Synchroshift. Even stranger.

Sounds like another ghost product. I'm staying with Redline and Royal Purple.

Thanks for wasting my time.

ok,

i guess you have it all figured out..

beers

Jan 23, 2008 | 09:56 PM

#27

Startl_Respons

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From: the hive

Quote:

Originally Posted by swoope

ok,

i guess you have it all figured out..

beers

But why isn't the manual transmission fluids on their website? Can you provide me a link? So what if he runs a race team?

Jan 23, 2008 | 10:25 PM

#28

swoope

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From: orlando, fl

http://www.bgprod.com/products/driveline.html

shameless plug not for me...

beers

Jan 23, 2008 | 10:28 PM

#29

Startl_Respons

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From: the hive

I was on that website before. Looks like they put the manual trans products under "Drive Line Service" instead of "Transmission Service." Those headings could make better sense.

Swoope, what do you use in your trans and LSD?

Jan 23, 2008 | 10:35 PM

#30

swoope

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From: orlando, fl

rp.

works fine for me.. i think that any fluid will not fix a problem.. it might mask it for a while, but if the problem is there it will come back..

rp went in at 30 k miles.. changed at 60k now at 83 k miles all is smooth...

i will say that i do believe in bg products.. the 44k is a great thing..

beers

Jan 24, 2008 | 03:48 AM

#31

TrochoidMagic

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From: hollywooood!

i too agree the royal purple was a bit strange after i used it at 2k miles... its been notchy. but goes away after the engine warms.
so now i know. i'll just let it sit for a while until the exhaust heat warms it or whatnot.
so i guess everyone experiences this?
****, i'm dissapointed. i've almost get the close to grinding feel...and i've driven stick ??? 10yrs?
i'm only gonna use RP 75/140 for diff now. and maybe mix a lil with ... whats that for the trans by mobil 1? any heavier grade?

Jan 24, 2008 | 07:53 AM

#32

kennyfrc1

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Quote:

Originally Posted by swoope

i will say that i do believe in bg products.. the 44k is a great thing..

beers

Jan 24, 2008 | 01:35 PM

#33

Astral

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From: Worcester, MA

Quote:

Originally Posted by TrochoidMagic

Go with Redline MT-90...

When it's cold, yeah there's the close to grinding-but-not-quite feel. That's how it is... In the warm weather, I basically don't get that.

Jan 24, 2008 | 01:36 PM

#34

Astral

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From: Worcester, MA

Quote:

Originally Posted by Startl_Respons

And kennyfrc1 sells BG... As I said, I tried RP MaxGear 75W90 and Redline MT-90 in my tranny, and the Redline stuff is noticeably better, smoother, in every respect.

Jan 24, 2008 | 02:24 PM

#35

TeamRX8

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if you push your street car hard at the autox/track/dragstrip then I highly recommend the Redline 75W140NS gear oil for the trans, you need all the protection there you can get

Jan 24, 2008 | 05:29 PM

#36

LionZoo

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From: Oakland and Los Angeles, CA

Quote:

Originally Posted by TeamRX8

if you push your street car hard at the autox/track/dragstrip then I highly recommend the Redline 75W140NS gear oil for the trans, you need all the protection there you can get

I thought you used the Shockproof stuff Team, not the NS. And why 75W140 instead of 75W90?

Jan 24, 2008 | 05:33 PM

#37

nycgps

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From: Planet Earth

Quote:

Originally Posted by LionZoo

I thought you used the Shockproof stuff Team, not the NS. And why 75W140 instead of 75W90?

Cuz 140 can protect ur parts better even under hard *** driving.

Jan 26, 2008 | 02:13 PM

#38

TeamRX8

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Go back and reread my post

Shockproof isn't intended as an everyday street oil, I don't drive mine on the street much

Jan 26, 2008 | 02:14 PM

#39

TeamRX8

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Quote:

Originally Posted by Charles R. Hill

Team, my guess is that most people have no clue what pushing one's car "hard" literally entails. 99% would do fine with lesser fluids, IMO.

judging by all the transmission issues, including your own

, I'd say otherwise ...

Jan 26, 2008 | 03:04 PM

#40

LionZoo

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From: Oakland and Los Angeles, CA

Quote:

Originally Posted by Charles R. Hill

Plus, the fact that you had to clarify why you use 140 is exactly what I am talking about. People don't know what REAL abuse is.

I admit to that. Even compared to normal everyday drivers, I have a very soft touch when it comes to all control inputs.

Jan 26, 2008 | 03:44 PM

#41

LionZoo

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From: Oakland and Los Angeles, CA

Quote:

Originally Posted by Charles R. Hill

Softer is better/faster, but we "ham-fisters" are a different story.

Some of us lack the weight to be ham fisted! https://www.rx8club.com/showpost.php...&postcount=113

Jan 26, 2008 | 03:53 PM

#42

TeamRX8

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the heavy oil will help offset abuse, whether accidental or not

IMO Redline 75W140NS will add life to any RX-8 manual trans, how you drive it will ultimately determine how many miles that ends up being

Quote:

TRANSMISSIONS - MTL® can be used in most manual
transmissions and transaxles for both street and racing
use unless the manufacturer requires the additional protection
of an SAE 90 or the extreme-pressure protection
of a GL-5. In those situations the MT-90 (GL-4) or
75W90NS (GL-5) will provide good shiftability and synchro
compatibility and extra gear protection.
LightWeight Gear Oil can be used in transmissions calling
for a 75W or 80W GL-5. 75W140NS will provide
greater high-temperature viscosity, reducing gear noise
and rattle. D4 ATF can be used where the manufacturer
calls for an ATF as the D4 has GL-4 gear protection
and provides the best low-temperature shiftability.

Remember, it's still a 75W oil when cold, the increase only comes as the temps rise, just where you need it.

Last edited by TeamRX8; Jan 26, 2008 at 03:57 PM.