I use it, works great in my DSM (87k, road raced, original unopened tranny!)

Saved me from having to rebuild the tranny on my MR2. 3rd gear was getting real funky, switched to the Redline and it's usable again (not great, but yeah, it really does need overhauled (172k miles, unopened)).

Redling Shockproof was not made for transmissions. It was made for transfer cases and rear diffs.

Redline makes two good tranny fluids, too. They're called MTL and MT-90.

Good luch draining all the Shockproof out of your tranny! That stuff is thick and sticky!

Originally posted by pneumo
Redling Shockproof was not made for transmissions. It was made for transfer cases and rear diffs.

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Sure it is. Give Redline a call and they'll be more than happy to explain the pros and cons of running it in your tranny vs. the other products they offer.

Pros and cons of using shockproof in the DSM tranny? What are the cons? I've read all the stuff they say about shockproof, and it doesn't mention any benefit for shifting. In fact, it doesn't say anything about shifting gears. It just talks about bearing and gear face protection. It even says,"...metal-to-metal friction is greatly reduced." To me that sounds like the syncros would have a hard time doing their job, making it more likely that the gear would grind when shifting, which is what is happening to Clipse's tranny.

In short, if your tranny oil doesn't work for you, try something else.

Pennzoil Synchromesh.

Originally posted by pneumo
I've read all the stuff they say about shockproof, and it doesn't mention any benefit for shifting. In fact, it doesn't say anything about shifting gears.

In short, if your tranny oil doesn't work for you, try something else.

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Apparently you haven't read the label on the bottle...

Quite right, if it's not working for you, try something else. Lots of people recommend the BG synchro shift.

I use it in my T-case. Too thick for my tranny though.

It does mention on the bottle that it should be used in transmissions in high horsepower applications. However, Pneumo does make a very good point regarding the sychros.

I broke the clutch in over the weekend and was able to get some high rpm shifting in and I was fairly impressed. Shifting is still quite notchy at lower rpm cruising speeds, but once you get ripping trough gears at around 7k it's a completely different story. But because my car does see quite a bit of city driving I am considering a mix of BG synchroshift and Shockproof.

How do i check the level of and locate my tranmission fluid. I dont know where it is on my 2G GST. I'm going to put some hi performance Lucus heavy duty oil Stabalizer in it today to see if it makes any difference and need some assistance. A pic would suffice.

Buy a haynes manual, if you own a DSM, chances are your going to need it =) There should be a filling bolt on the aluminum case where you can just stick your finger in and the fluid level should as high as that hole (if you cant feel any then pour some more into that hole until it starts to leak out).

the transaxle and transfer case are two different things. there should be a check plug and drain plug if its like most cars. The highest one is the check plug. Take it out and the fluid level should be even with the hole, meaning if you stick your finger in you should get some fluid on your finger. If you dont, you need to add some. I would first check the quality of the oil to see if it needs replacing. If it does, remove the lower plug(drain plug) and drain it out. If there is no drain plug, youll need a pump which you may not have. Once its all drained, put the drain plug back in and add oil through the check plug hole until it comes out that hole. Let it level off then voila! If you wont want to do this in your driveway or dont have a lift, you can get it done at a valvoline oil change place.

Drain and refill with Pennzoil Synchromesh from Auto Zone.

Remove the fill plug FIRST.

http://www.plymouthlaser.com/tflu.htm

What kind of oil and how much of it do i need if i drain my tranny?

Defiant said:

Drain and refill with Pennzoil Synchromesh from Auto Zone.

Remove the fill plug FIRST.

http://www.plymouthlaser.com/tflu.htm

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Would you recommend the same for the 420a as well.

SilverEclipseT said:

Would you recommend the same for the 420a as well.

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I would.
I use the same in both my N/T and Turbo DSM.

Pennzoil, Quaker State or AC Delco (GM) synchromesh. Auto Zone carries the Pennzoil. If you care about your transmission, transfer case, or rear end do not put Lucas Oil Stabilizer in it. There IS a gear oil that Lucas makes, that might be alright, but the Oil Stabilizer works well in engines, but not much else. Poke around on the forums on www.bobistheoilguy.com to see for yourself.

if i use lucas gear oil how much of it do i use and how much regular gear oil?

For Lucas' gear oil (available in either 80/90 or 85/140) you would use it just as you would normal gear oil. I'm still a little leery of Lucas in anything but an engine, so I'd probably use it half and half with a traditional gear oil of the same weight.

Not sure how to link threads, so I have copied and pasted a previous post. See below.

Here is a link to the Penzoil Syncromesh oil. Key is, from what I have reviewed, is our trannys have Brass (yellow metal) syncro's. Normal gear oil, oxidizes these and wears them out sooner. So that is why, you need to use an oil specified for "yellow metal", as brass alloys are commoning called.

I bought my 91 Laser, n/t, with a rebuilt replacement 5 speed already installed by the previous owner. He had the normal characteristic, "sticky second". Well the 5 speed only had about 800 miles on it when I bought the car, and second was not a smooth shift when car was cold. I changed the fluid to the Penzoil, since I could not find Redline (Advance Auto parts said they were considering carrying Redline products, but I have not checked back). I purchased the Penziol from Autozone.

So far so good. Tranny has about 7K miles on it now, since the change, and it is very smooth, but then, it is summer too, so we will see. Anyway, here is the link!

http://www.pennzoil.com/products/ge...ncro_fluid.html

Have any of you guys used motor oil for the transmission? A few of my dsm friends swear by it that 30w oil makes it shift alot better is this true?

My friends Acura calls for that stuff in the book. Personally, I would stick to GM Synchromesh as it works very well for us DSMers.
Later
Arnie

I wouldn't do it. The molecular properties of the two fluids are different.

With products like SynchroShift and Synchromesh out there, I wouldn't use anything else.

That's just my $.02 though.

Will

Autozone sells Pennzoil Syncromesh. I use it in both my cars.

The best part its only $5/quart

No reason to use motor oil over this stuff.