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Old 02-20-2013, 03:21 PM   #1
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What transmission oil do I use?

Okay, newb question, but I just got the jeep and was running through all the fluid level checks and such.

Is there a fluid you can get off the shelf somewhere?

Book calls for Mopar Manual Transmission Lubricant, P/N 04874464. But I don't feel like paying mopar the extra bucks if there is a good aftermarket fluid out there. It is a 2002 with 5 speed manual by the way.

Also what is the torque to put the plug back on? Mopar neglected to mention that in the owners manual and I don't want to mess something up when I put it back on.

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Old 02-20-2013, 03:26 PM   #2
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Redline MTL, Royal Purple Synchromax, and Amsoil Synchromesh are three good full-synthetic choices.

I personally would not use Synchromesh from Pennzoil or GM (same product, a dino oil) though they are technically suitable. Too many bad reports of poor shifting characteristics after installing that particular gear lube.

Torque-wise, just use a 3/8" ratchet wrench to get the plug good and snug and it will be fine. Don't use a 1/2" ratchet wrench which can apply too much torque for that size bolt.

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Old 02-20-2013, 03:26 PM   #3
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You can buy Pennzoil Synchromesh at your local parts store that is compatible, however, many here, myself included, have found that some of the synthetic trans. fluids perform much better. I myself am running Redline MTL, and it made a noticeable difference in the noise and shifting in my NVG3550.

Ah Jerry beat me to it. Save yourself the trouble and just order some of the Royal Purple or Redline if you can't find it local.
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Old 02-20-2013, 03:31 PM   #4
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I thought any ATF+4 will work. I just changed my transfer case oil with Castrol full synthetic ATF+4. I'm debating whether I want to tackle changing the transmission oil and filter myself @ 50k miles...
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Old 02-20-2013, 03:33 PM   #5
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I thought any ATF+4 will work. I just changed my transfer case oil with Castrol full synthetic ATF+4. I'm debating whether I want to tackle changing the transmission oil and filter myself @ 50k miles...
ATF+4 is correct for the transfer case and an automatic transmission but the OP said he has a 5-speed manual transmission where ATF+4 would not be the correct choice.
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Old 02-20-2013, 03:45 PM   #6
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thanks for the input. I may end up flushing the tranny and putting new fluid/filter in. PO didn't mention when/if he last changed the fluid and she is just short of 150K. It only does this when it is cold out, but it shifts kind of hard. Feels like there is some kind of resistance about halfway into each gear. When it is warm out, or after engine and tranny warm up a bit, that doesn't happen.

That being said, how do I get to and change the filter? Owners manual doesn't mention that part either. Also what brand filter is best for replacement?

As for the fluid, I have heard good stuff about the Royal Purple brand, but never heard of the other 2. But somebody said synchromesh is pennzoil, and I dislike putting pennzoil in my engines, so that one is definitely out. So I guess I will be going with Royal Purple, anybody know round about how much fluid I will need for the 5-speed? I don't recall seeing that volume in the owners manual either.
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Old 02-20-2013, 03:50 PM   #7
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There is no filter in a manual transmission.
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Old 02-20-2013, 03:52 PM   #8
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Oh, and the NVG3550 holds just (barely) over 2 quarts.
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Old 02-20-2013, 03:57 PM   #9
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There is no filter in a manual transmission.
There goes that poorly written owners manual again confusing me. So no filter? Just drain and refill?
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Old 02-20-2013, 03:58 PM   #10
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There goes that poorly written owners manual again confusing me. So no filter? Just drain and refill?
Yep
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Old 02-20-2013, 04:02 PM   #11
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Sweet, looks like another lazy sunday job. I am pretty sure autozone or advance or somebody around here carries the Royal purple. Are there different types of Royal purple so I know exactly which to be getting? Or will it just say for manual transmissions on the bottle or something to that effect?

And my home brew is gonna be ready so I have some beers to drink while I merrily work along on the TJ. I just hope my first experiment with a 90 minute IPA doesn't suck.
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Old 02-20-2013, 04:17 PM   #12
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If nobody mentioned it already, make sure to remove fill plug first, then drain plug second. You don't want to drain all the fluid, and find out later that you cannot remove the fill plug

Also, a manual fluid pump of some type makes refilling much easier.
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Old 02-20-2013, 04:25 PM   #13
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Awesome, thanks guys
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Old 02-20-2013, 08:22 PM   #14
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Quote:
Originally Posted by Jerry Bransford
ATF+4 is correct for the transfer case and an automatic transmission but the OP said he has a 5-speed manual transmission where ATF+4 would not be the correct choice.
Oh crap. My bad, I missed that tiny bitty detail. Lol. Thanks for correcting me.
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Old 02-20-2013, 08:25 PM   #15
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Originally Posted by viperx6x9x View Post
But somebody said synchromesh is pennzoil, and I dislike putting pennzoil in my engines, so that one is definitely out.
What do you have against Pennzoil?
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Old 02-20-2013, 09:19 PM   #16
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I was probably just misinformed, but a lot of oils use recycled engine oil blended in. I was told pennzoil used higher percentage of recycled (used) engine oil than most. And Mobil used the least percentage of recycled oil, so I have always been preferential to Mobil. Last 2 vehicles I had, I used strictly mobil, and never had a mechanical problem with the engines.

If this info is true, sorry environment, I choose my engine not seizing up.
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Old 02-20-2013, 10:33 PM   #17
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You know Pennzoil/ Quaker State is owned by Shell oil? Anyway, I believe the information you got is false. We aren't talking about motor oil anyhow.
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Old 02-21-2013, 04:44 AM   #18
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yeah, sorry that got sidetracked, it was mostly a brand dislike thing. Not motor oil specifically. And like I said, I was probably misinformed on that, but it's just habit by now.

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