Red Line Transmission Fluid
#1
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Red Line Transmission Fluid
Hi all,
Well it is time to change my transmission fluid but I do not know which of the two bellow:
Redline MTL Transmission Fluid 70W80 GL-4 Gear Oil
or
Redline MT-90 Transmission Fluid 75W90 GL-4 Gear Oil that's slightly heavier than MTL
Well it is time to change my transmission fluid but I do not know which of the two bellow:
Redline MTL Transmission Fluid 70W80 GL-4 Gear Oil
or
Redline MT-90 Transmission Fluid 75W90 GL-4 Gear Oil that's slightly heavier than MTL
#2
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I put mt-90 in a couple thousand miles ago and couldn't be happier. There was a very noticeable improvement in shift quality right off the bat - an overall smoothness that wasn't present with the original oil. Either way, I doubt you could go wrong.
#3
Got Another Rotary
Some go with a 50/50 mix of MTL and MTL-90 so that you can get good protection with excellent shifting. StealthTL has done this and seems to like it.
#5
Boosted Kiwi
iTrader: (2)
Just to confuse you - heh . I was running MT-90 and have sinced switched to Redline lightweight Sockproof . Main reason I changed was for track work but I've found it to be much better for smooth shifting in daily driving , hot or cold . The difference is night and day .
#6
Got Another Rotary
Just to confuse you - heh . I was running MT-90 and have sinced switched to Redline lightweight Sockproof . Main reason I changed was for track work but I've found it to be much better for smooth shifting in daily driving , hot or cold . The difference is night and day .
I know Team uses this, but he is using his car mostly for racing in which this may make sense as he may be more concerned with gear wear than syncro wear. This is not the case for most street driven cars unless you track it most of the time!
http://www.redlineoil.com/products_g...6&categoryID=6
If you want to use Redline products, MTL or MTL-90 is what you need (or a blend of these).
Last edited by Jax_RX8; 09-21-2007 at 03:33 PM.
#8
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how many quarts do you need? i was going to change that a long with my oil and diff oil. Basically i need to know how many quarts of oil i need, diff fluid, and the trans fluid. and what is a good diff fluid?
#9
Carbonormous
Join Date: Aug 2003
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Oddly Redline Australia adds Lightweight as an option (with an * of course)
http://www.redlineoil.com.au/oil-fin...ProductID=7589
#12
Out of NYC
iTrader: (1)
and I have yet to have problems, maybe my tranny is a bit bigger ?
Rear diff took about 1 and 1/2 quart.
ROYAL PURPLE FTW !!!!!!!!!!!!!!
but Im going to try some Redline next time, just for the hell of it.
#19
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I believe he's saying Lightweight is not the correct choice. I might be interpreting poorly though.
Our trans is a 75W-90 which would make the Heavyweight the go ahead choice anyway. Read the Redline Shockproof white papers.
"Improved durability in high-performance use is the primary benefit of the Heavy ShockProof™ and along with the improved durability is an improvement in efficiency, but if further improvements in efficiency are desired, and durability is not a major concern, LightWeight and SuperLight ShockProof™ can be used."
EDIT: typed "diff" meant "trans" - corrected.
Our trans is a 75W-90 which would make the Heavyweight the go ahead choice anyway. Read the Redline Shockproof white papers.
"Improved durability in high-performance use is the primary benefit of the Heavy ShockProof™ and along with the improved durability is an improvement in efficiency, but if further improvements in efficiency are desired, and durability is not a major concern, LightWeight and SuperLight ShockProof™ can be used."
EDIT: typed "diff" meant "trans" - corrected.
Last edited by savedsol; 10-13-2007 at 08:02 AM.
#22
No respecter of malarkey
iTrader: (25)
I believe he's saying Lightweight is not the correct choice. I might be interpreting poorly though.
Our diff is a 75W-90 which would make the Heavyweight the go ahead choice anyway. Read the Redline Shockproof white papers.
"Improved durability in high-performance use is the primary benefit of the Heavy ShockProof™ and along with the improved durability is an improvement in efficiency, but if further improvements in efficiency are desired, and durability is not a major concern, LightWeight and SuperLight ShockProof™ can be used."
Our diff is a 75W-90 which would make the Heavyweight the go ahead choice anyway. Read the Redline Shockproof white papers.
"Improved durability in high-performance use is the primary benefit of the Heavy ShockProof™ and along with the improved durability is an improvement in efficiency, but if further improvements in efficiency are desired, and durability is not a major concern, LightWeight and SuperLight ShockProof™ can be used."
I run Heavy Shockproof because IMO it makes the trans more durable in the long run. If I wasn't running Heavy Shockproof I'd be using Redline 75W140NS instead (and did before switching to Heavy Shockproof for better efficiency during racing conditions). IMO the lighter fluids break down too easily under high loading and high heat. The trans in general is a weak POS. Trying to get increased efficiency out of it will only result in it breaking sooner, rather than later. It will eventually break though.
I wouldn't recommend running Shockproof oil in a clutch pack differential though. Stick with the traditional 75W90 oils.
Last edited by TeamRX8; 10-12-2007 at 09:49 PM.
#23
Boosted Kiwi
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so let me get this straight Team.
You have blown 2 transmissions and another 2 on the way while using Heavy shockproof . And you are saying not to use lightweight for durability reasons when that is the one recommended by Redline for racing applications .
Manual Gearbox Red Line 'MT90' (* Advantage Option for Racing Only using 'Lightweight Shockproof'.) @ see handbook for Litres
You have blown 2 transmissions and another 2 on the way while using Heavy shockproof . And you are saying not to use lightweight for durability reasons when that is the one recommended by Redline for racing applications .
Manual Gearbox Red Line 'MT90' (* Advantage Option for Racing Only using 'Lightweight Shockproof'.) @ see handbook for Litres
Last edited by Brettus; 10-13-2007 at 01:51 AM.
#24
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Brettus, read the Redline USA site and you'll see why there are different shockproofs. As described in the whitepapers, heavy weight is the "heavy duty" vs the lightweights are for getting rid of every last bit of friction you can while foresaking durability (ie time trialing). Redline USA doesn't recommend any Shockproof for synchroed transmissions FWIW.
Last edited by savedsol; 10-13-2007 at 04:06 PM.
#25
No respecter of malarkey
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Brettus, you're making assumptions, rather than being familiar with the facts
The non-Shockproof failures (80W90 and MTL oils) were catastophic blow ups; gears stripped of teeth, etc. The Heavy Shockprrof trans lasted way longer and only needs a 3rd gear synchro set that wasn't inspected during the prior rebuild. The other trans is regular 80W90 oil and is just shy of a catastorphic failure; no reverse gear, whining in 4th gear and other not-good noises
I'm quite familiar with the various weight Shockproof oils. I've been using them for over tens years on a variety of cars. If you're concerned with durability I wouldn't use anything less than Heavy Shockprooof on an RX-8 trans, or 75W140NS if you're concerned that Shockproof isn't the right choice.
The non-Shockproof failures (80W90 and MTL oils) were catastophic blow ups; gears stripped of teeth, etc. The Heavy Shockprrof trans lasted way longer and only needs a 3rd gear synchro set that wasn't inspected during the prior rebuild. The other trans is regular 80W90 oil and is just shy of a catastorphic failure; no reverse gear, whining in 4th gear and other not-good noises
I'm quite familiar with the various weight Shockproof oils. I've been using them for over tens years on a variety of cars. If you're concerned with durability I wouldn't use anything less than Heavy Shockprooof on an RX-8 trans, or 75W140NS if you're concerned that Shockproof isn't the right choice.
Last edited by TeamRX8; 10-13-2007 at 04:33 PM.