Redline Application Questions

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LargeCarMan

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Just broke down and bought a Suzuki Swift to transport/commute to work. It has 175K on it and runs like a top. It calls for GL-4 75-90 in the 5 speed transmission/front end gearbox.

1. I would like to know what you think about a drain and refill with the Redline GL-4 70-80 weight?

2. Or would you just drive the little car and hope for another 50K?
 
What happened to MT-90?; it is 75W-90.

I am running a 50/50 mix of MT90/MTL in myota. I forgot what it calls for viscosity wise. Great stuff.

I probably wouldn't jump to rl this late in the game.
 
Does Redline have an application that meets or exceeds the Dexron III (h) ATF specs?
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The Mt90 is 75-90 GL-5...I was looking at the 70-80. I think the stock tranny is filled from the factory with synthetics.
 
quote:
mt90 is gl4.
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Correct. Red Line's GL-5 product for synchronized transmissions is 75W90NS.

Personally, I'd change the fluid out if I didn't think, or didn't know whether, the fluid had been changed out very recently (ever?). Red Line's gear and transmission fluids are very competitively priced and in my experience are excellent products. I'd stick with the 75W90 grade, though, so MT-90 would be my choice.
 
So the old school of GL-5 for gears only is old school or because it is a transmission and rear end together the MTL-R or 90NS is speced/formulated for synchronized transmissions and works in both applications?
 
Whoa, there.

Use GL4 lubes where the manual calls for them (usually the tranny, for protecting brass synchros).

Use GL5 lubes where the manual calls for them (usually diffs, where EP/HS additives are needed).

I would strongly recommend against substituting one for the other.

Of course, multirated lubes are another subject entirely...
 
quote:
So the old school of GL-5 for gears only is old school or because it is a transmission and rear end together the MTL-R or 90NS is speced/formulated for synchronized transmissions and works in both applications?
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NO!

You're confusing the API dual rating of GL4/GL5 with dual applications. They are not the same. Do not use MTL-R in the differential. MTL-R is designed for use in MT and manual transaxles.

As I stated previously, I recommend against using any differential fluid in a manual transmission and vice versa.
 
quote:
Click to expand...
Just broke down and bought a Suzuki Swift to transport/commute to work. It has 175K on it and runs like a top. It calls for GL-4 75-90 in the 5 speed transmission/front end gearbox.

1. I would like to know what you think about a drain and refill with the Redline GL-4 70-80 weight?

2. Or would you just drive the little car and hope for another 50K?

LCM,
I got a 94 Metro XFI, I serviced it Mola's MLT P last spring and noticed an immmediate difference in resistance to roll. The shifting is so much better, is really unbeleivable that a gear oil can make that much difference. I am able to adjust the clutch pedal play properly now also. Could not do it before. Was not able to get the pedal play clearance and have it shift without a click or tick of the synchro. I dont know what was in it when I bought it but it was clean and green when drained. Previous owner said he had the clutch replaced. Have had it since 02. My manuel says 75w90 gl4, and it it also says gl5 is acceptable. I guess we can call you "small car guy now eh?"
lol.gif

Jeff
 
Thanks for clearing that up Mola, and jeff1ge thats what I mean by breaking down...I love large vechiles....(safety) but, I refuse
smile.gif
to change my name to smallcarman
smile.gif


Anyway, how much did your trans/diff take, the book say's something like 5.4 pints? and glad to hear that the MLT-P from Specility Formulations works so good.
 
quote:
Originally posted by LargeCarMan:
The Mt90 is 75-90 GL-5...I was looking at the 70-80. I think the stock tranny is filled from the factory with synthetics.
Click to expand...
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Stock tranny on A-4 is regular ATF Dexron III (h) and the new A-6 it is Dexron 6 which is semi-synthetic.
128.gif
 
quote:
Originally posted by LargeCarMan:
I think the stock tranny is filled from the factory with synthetics.
Click to expand...
Why do I find this hard to beleive.
A smaller car manufacturer is filling their econo-box trannies with synthetics? And how often do they say to change this magical exilir?


I'd slap some 20W50 or 15W40 Delo/Delvac in it and call it a life. It's a fraggin Suziki Swift...
 
Ok, some Suburu's are factory synthetics and other OEM's with poorly designed/overstressed transmissions/Automatic or Manual use synthetics as a factory fill. Look at Chrysler...might save the BIG corporations dollars in warranty work.

I like to use the correct fluids for the applications whether it's a Suzuki or Peterbilt.

LCM
 
944CS, I've used Valvoline and M1 GL-5 synthetics in the transaxle of my track '87 924S (same engine and transaxle as yours, but with a shorter 5th gear).

These drivetrains are noisy, they tend to transmit lots of gear rattle then in neutral.

Mine has gotten a little worse over 10 years of very hard track driving, but the synchros are still fine (except for 1st gear - I accidently tried the ever-popular 4-1 downshift at the end of the main straight at Lime Rock. Fortunately it didn't go into gear, but the related synchros said goodbye. Changed the trans oil right after to get rid of the debris. That was maybe 5 years ago.
 
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