Transmission Flush (Manual, Redline MT-90)
12-31-2006, 03:51 AM
#201
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Originally Posted by Fredzy
I found a place that sells Redline 75W90 NS online,
http://www.hrpworld.com/index.cfm?fo...action=product
http://www.hrpworld.com/index.cfm?fo...action=product
12-31-2006, 05:39 PM
#204
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GEAR AND SYNCHRONIZER WEAR PROTECTION
Most manufacturers of manual transmissions and transaxles recommend an 80W or 90W GL - 4 lubricant. GL - 5 gears oils which are required in hypoid differentials are not used in most synchromesh transmissions because the chemicals used to provide the extreme pressure protection can be corrosive to synchronizers, which are commonly made of brass or bronze. Typically, the use of a GL - 5 lubricant in a synchromesh transmission will shorten the synchronizer life by one half. The extreme pressure requirements of spur gears and helical gears found in transmissions are not nearly as great as found in rear-wheel drive differentials. A GL - 4 lubricant provides adequate protection for most manual transmissions, unless a unique design consideration requires the extra protection of a GL - 5.
Most manufacturers of manual transmissions and transaxles recommend an 80W or 90W GL - 4 lubricant. GL - 5 gears oils which are required in hypoid differentials are not used in most synchromesh transmissions because the chemicals used to provide the extreme pressure protection can be corrosive to synchronizers, which are commonly made of brass or bronze. Typically, the use of a GL - 5 lubricant in a synchromesh transmission will shorten the synchronizer life by one half. The extreme pressure requirements of spur gears and helical gears found in transmissions are not nearly as great as found in rear-wheel drive differentials. A GL - 4 lubricant provides adequate protection for most manual transmissions, unless a unique design consideration requires the extra protection of a GL - 5.
I would stick to GL-4 since it's designed for more use in synchroed tranys rather than just differential gears.
03-24-2007, 08:14 PM
#207
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Great writeup!!! This question may have already been asked or may not have, I just didn't want to read through 11 pages. Anyway, when you fill the tranny with new fluid, do you have the car sitting perfectly level on jackstands? Or do you just have the front of the car propped on jack stands? Because that can affect how much fluid it takes to start coming out of the fill plug when you fill it up. Thanks in advance for any answers.
03-24-2007, 08:42 PM
#208
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It takes the 3 quarts. Whether its on a slant or sitting perfectly, as long as you get it to take all 3 quarts, you are fine. Anyway, I don't think that 3 quarts fill it to the VERY top. Just like we feed 4 quarts of oil to the motor, but you can probably fill it with 5 before it hits the very top. This is because it expands as it heats. So don't worry about it since the car will obviously be cold.
03-25-2007, 01:11 PM
#210
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I've swapped from MT90 to Amsoil 75W/90 GL4 gear oil. A good bit smoother than redline.
Here's my review on it:
http://www.clubsciontc.com/forum_thr...--review-.html
Here's my review on it:
http://www.clubsciontc.com/forum_thr...--review-.html
04-07-2007, 02:24 AM
#211
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Well I did the swap today after a particularly long day at work. Here are a few things learned -
1) The transmission drain bolt is in a very tight spot. I was able to get to it with a 15/16" wrench. The sockets I had would fit but I couldn't get the ratchet handle into that spot.
2) Transmission fluid is very thick and slick (and messy).
3) Bolts holding in fluid have gaskets. I'd completed the swap with no problem whatsoever and was ready to pull my tC off the jack stands. I pulled the drain pan out and there's a gasket sitting there. A quick look at the drain and fill bolts informed me that the drain bolt was missing a gasket (and was starting to drip fluid), so I got my drain pan, gasket, and wrench ready, unscrewed the bolt and with MT90 flowing all over my hands replaced the gasket and the bolt. Then went on to complete the process a second time hoping I'd lost less fluid during the gasket replacement than I had remaining in my final MT90 bottle. Luckily I had enough to fill the transmission to the point of fluid coming back out of the fill hole.
4) Feeling like an idiot for the above experience quickly went away as I took my first test drive around the neighborhood.
It was a relatively easy swap, and well worth being covered in transmission fluid!
1) The transmission drain bolt is in a very tight spot. I was able to get to it with a 15/16" wrench. The sockets I had would fit but I couldn't get the ratchet handle into that spot.
2) Transmission fluid is very thick and slick (and messy).
3) Bolts holding in fluid have gaskets. I'd completed the swap with no problem whatsoever and was ready to pull my tC off the jack stands. I pulled the drain pan out and there's a gasket sitting there. A quick look at the drain and fill bolts informed me that the drain bolt was missing a gasket (and was starting to drip fluid), so I got my drain pan, gasket, and wrench ready, unscrewed the bolt and with MT90 flowing all over my hands replaced the gasket and the bolt. Then went on to complete the process a second time hoping I'd lost less fluid during the gasket replacement than I had remaining in my final MT90 bottle. Luckily I had enough to fill the transmission to the point of fluid coming back out of the fill hole.
4) Feeling like an idiot for the above experience quickly went away as I took my first test drive around the neighborhood.
It was a relatively easy swap, and well worth being covered in transmission fluid!
05-17-2007, 03:43 PM
#214
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Scikotics
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Originally Posted by web
I've swapped from MT90 to Amsoil 75W/90 GL4 gear oil. A good bit smoother than redline.
Here's my review on it:
http://www.clubsciontc.com/forum_thr...--review-.html
Here's my review on it:
http://www.clubsciontc.com/forum_thr...--review-.html
05-17-2007, 05:42 PM
#215
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Originally Posted by Fsu1dolfan
Originally Posted by web
I've swapped from MT90 to Amsoil 75W/90 GL4 gear oil. A good bit smoother than redline.
Here's my review on it:
http://www.clubsciontc.com/forum_thr...--review-.html
Here's my review on it:
http://www.clubsciontc.com/forum_thr...--review-.html
......smooth shifts and positive engagement .
06-30-2007, 12:35 AM
#220
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I just did this swap two days ago and its great!! It has gone into reverse on the 1st try every time where with the old fluid it took up to 3 trys. Some things i noticed was why remove the reverse sensor? Napa sells a gear oil pump that attaches to the bottle for $4, i did mine this route and it worked great. Also it ONLY takes 2.5 quarts..the owners manual states this and i filled mine when it was off the jack on level ground and at 2.5 it started spilling out the fill hole as it should when its full. This is a must do mod!! Def worth the time, money and effort!!