XC92
Proven Member
- 1,573
- 362
- Jul 22, 2020
-
Queens,
New_York
As everyone here knows I recently rebuilt the manual trans on my '92 Talon TSi AWD. It was actually a '94 AWD trans as the dealer swapped it out back then due to some issues I vaguely recall with shifting into 2nd or 3rd. I rebuilt it because it kept popping out of 1st and was sometimes grinding on other gears.
Pretty sure that this was caused by incomplete clutch disengagement, given how worn the 1st-2nd sleeve teeth & synchros were, that in turn was likely caused by the infamous 1G clutch pedal slop issue that I've temporarily resolved and am about to permanently fix.
The rebuild itself has worked out great.
Anyway, I'm wondering if, when and with what to replace the initial gear oil after a certain break-in period, and if I should limit certain kinds of driving during this period, e.g. high revs, launches, excessive speeds, etc.--which I've been doing, for this and other reasons (need to replace TB so I'm taking it easy).
I put in mostly Mitsubishi GL-4 75W-85 gear oil, as per Jack's and others' rec. I know that some people rec other kinds of oil and respect that, it's just what I decided to go with.
And I say mostly because when I added the oil after reinstalling the trans, I stupidly did so before reinstalling the CV axles, and oil poured out the front diff openings until I was able to reinstall the axles and stop the leaks.
Enough leaked out that I didn't have enough of the Mitsu oil left to fully top things off, so I had to use some RedLine 75W-85 that I bought to put in the t-case to top it off. Hopefully that wasn't a bad idea as I understand that you're not supposed to mix oils, and thankfully there was still enough of the RedLine left to top off the t-case.
Anyway, that was several hundred miles ago, and I'm wondering if and when it'll be time to replace this oil, this time with a single source oil so no mixing.
And is it ok to stick with the Mitsu, or perhaps switch to the RedLine, both being 75W-85 (especially with colder weather coming)? My setup is stock and likely to remain so, so it's putting out stock power, and I don't race or do anything "crazy" with the car.
Pretty sure that this was caused by incomplete clutch disengagement, given how worn the 1st-2nd sleeve teeth & synchros were, that in turn was likely caused by the infamous 1G clutch pedal slop issue that I've temporarily resolved and am about to permanently fix.
The rebuild itself has worked out great.
Anyway, I'm wondering if, when and with what to replace the initial gear oil after a certain break-in period, and if I should limit certain kinds of driving during this period, e.g. high revs, launches, excessive speeds, etc.--which I've been doing, for this and other reasons (need to replace TB so I'm taking it easy).
I put in mostly Mitsubishi GL-4 75W-85 gear oil, as per Jack's and others' rec. I know that some people rec other kinds of oil and respect that, it's just what I decided to go with.
And I say mostly because when I added the oil after reinstalling the trans, I stupidly did so before reinstalling the CV axles, and oil poured out the front diff openings until I was able to reinstall the axles and stop the leaks.
Enough leaked out that I didn't have enough of the Mitsu oil left to fully top things off, so I had to use some RedLine 75W-85 that I bought to put in the t-case to top it off. Hopefully that wasn't a bad idea as I understand that you're not supposed to mix oils, and thankfully there was still enough of the RedLine left to top off the t-case.
Anyway, that was several hundred miles ago, and I'm wondering if and when it'll be time to replace this oil, this time with a single source oil so no mixing.
And is it ok to stick with the Mitsu, or perhaps switch to the RedLine, both being 75W-85 (especially with colder weather coming)? My setup is stock and likely to remain so, so it's putting out stock power, and I don't race or do anything "crazy" with the car.