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What manual tranny fluid to use?


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#1 Lance_S

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Posted 19 July 2011 - 08:07 PM

Hey guys,

Need to change the tranny fluid and wanted to know what you guys are using.  I looked in the manual so I have the original numbers for the dodge part but it's 25 years later.  Any product you like for a stock 5 speed manual 88/89 that I can pick up at the local store?

Also wanted to know about the washer for the drain plug.  Is it the "use once" type and if so where is the best place to get a replacement.

Thanks in advance.

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#2 Killtodie

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Posted 19 July 2011 - 08:22 PM

I'm using Royal Purple Gear Fluid 75w/90, it has friction addictive and the same can be used in the LSD.

The washers are not crush type, so you can reuse them, but not too many times.

*actually I don't know if they are crush washers or not, flat copper ones. I have reused them when I forgot to buy new ones with no problem but after a while they will flatten out and you wouldn't be able to tighten it down enough. You can get em at any car store, if you cant and want to reuse, clean em up with some steel wool.

Edited by Killtodie, 19 July 2011 - 08:31 PM.


#3 Lance_S

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Posted 19 July 2011 - 08:30 PM

how much does that run per quart.  I think the fsm said it used 2.5 quarts in the tranny.

Thanks,

L
Hardpipes, MAFT, GM MAS, 3" DP, 2.5" exhaust, 950/1050 Trilogy injectors, K&N filter, Machined and balance flywheel 23 lbs, short shift, 88/89 tranny, HD ACT clutch, DSM EVO3 S16g ported (21 psi), polished and clipped, NJV head (ported), larger SS Valves, Schneider springs, Ajusa HG, Adjustable FPR, MBC, BOV, MSD coil, Walbro 255, ABS, EGR and balance shaft elim, 88/89 ECU, UEGO 02, new or rebuilt everything.

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#4 Killtodie

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Posted 19 July 2011 - 08:34 PM

It's more expensive, but not much more than other synthetics. About $18-21 a quart, buy another one and change out the LSD too. the LSD is 2.4 pints I think, 3 quarts should be enough for both.

#5 Lance_S

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Posted 19 July 2011 - 08:44 PM

FSM shows 1.4 qts for the LSD and 2.5 for the tranny so 4 should do it.  Stuff is not cheap.  $80 for an oil change! :-)  But it should last for quite a while.
Hardpipes, MAFT, GM MAS, 3" DP, 2.5" exhaust, 950/1050 Trilogy injectors, K&N filter, Machined and balance flywheel 23 lbs, short shift, 88/89 tranny, HD ACT clutch, DSM EVO3 S16g ported (21 psi), polished and clipped, NJV head (ported), larger SS Valves, Schneider springs, Ajusa HG, Adjustable FPR, MBC, BOV, MSD coil, Walbro 255, ABS, EGR and balance shaft elim, 88/89 ECU, UEGO 02, new or rebuilt everything.

My feedback:  http://www.starquest...howtopic=127993

#6 Killtodie

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Posted 19 July 2011 - 08:51 PM

Yeah, I think I bought 4 quarts and had a half left over. See if you can find it cheaper online, it's good oil, or like a 10% off coupon.

#7 88FIJIQUEST

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Posted 19 July 2011 - 10:13 PM

Quote

I'm using Royal Purple Gear Fluid 75w/90, it has friction addictive and the same can be used in the LSD.

what about the 75w/140 by royal purple for the rear end?
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#8 Indiana

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Posted 19 July 2011 - 10:37 PM

Go to a Mitsubishi dealer and get a gallon of Diaqueen lsd gear oil and a gallon of plain gear oil.  THERE IS NO BETTER JUST ASK THE EVO GUYS.   Its what was in there when it was new.  Why in the world put friction modifiers in a gearbox?  Pull the pan off don't just drain it the pan has SLUDGE in it. You can not buy this at a Dodge dealer.

#9 Killtodie

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Posted 19 July 2011 - 11:03 PM

I used 75/90 for my rear end as well, I believe its within specs.

#10 Komeuppance

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Posted 19 July 2011 - 11:08 PM

View PostIndiana, on 19 July 2011 - 10:37 PM, said:

Go to a Mitsubishi dealer and get a gallon of Diaqueen lsd gear oil and a gallon of plain gear oil.  THERE IS NO BETTER JUST ASK THE EVO GUYS.   Its what was in there when it was new.  Why in the world put friction modifiers in a gearbox?  Pull the pan off don't just drain it the pan has SLUDGE in it. You can not buy this at a Dodge dealer.

Agreed.  If you got money to throw away, go for it.  These parts lasted this long without the fancy stuff.

The manual will tell you a specification of the recommended oil, API GL4/GL5 for the trans in 80/90w, look on the bottle of any brand for this.  The LSD rear end specifies part # 8149630ex(superseeded to 3775610), which you have to get at the dealer ($40).  It doesn't spec an API or SAE for LSD's.

-Robert

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#11 Killtodie

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Posted 19 July 2011 - 11:32 PM

If you wanna use synthetic, use royal purple, its one of the best. the friction modifier does not cost anything more and will not harm your transmission.

#12 Bag-O-Chips

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Posted 20 July 2011 - 12:04 AM

I personally Recommend Motul or RedLine Shockproof. But for Longevity, Diaqueen is the stuff to get. :)

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#13 slowquest

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Posted 20 July 2011 - 10:40 AM

View PostKomeuppance, on 19 July 2011 - 11:08 PM, said:

Agreed.  If you got money to throw away, go for it.  These parts lasted this long without the fancy stuff.

The manual will tell you a specification of the recommended oil, API GL4/GL5 for the trans in 80/90w, look on the bottle of any brand for this.  The LSD rear end specifies part # 8149630ex(superseeded to 3775610), which you have to get at the dealer ($40).  It doesn't spec an API or SAE for LSD's.

-Robert


You SHOULD NOT use any fluid listed as GL5 in the manual transmission. GL4 ONLY!

#14 Caliber308

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Posted 20 July 2011 - 11:04 AM

View PostLance_S, on 19 July 2011 - 08:44 PM, said:

FSM shows 1.4 qts for the LSD and 2.5 for the tranny so 4 should do it.  Stuff is not cheap.  $80 for an oil change! :-)  But it should last for quite a while.

Sta-Lube GL-5 80/90wt Gear oil. Been using it for 22 years without a Manual Transmission failure ;)

Bill
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#15 Caliber308

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Posted 20 July 2011 - 11:06 AM

View Postslowquest, on 20 July 2011 - 10:40 AM, said:

You SHOULD NOT use any fluid listed as GL5 in the manual transmission. GL4 ONLY!

Why? GL-5 Works for me in my Manual Trans.

Bill
87 ESI-R: J.E.s 8 to 1 .040 over, Tims roller cam, Roller rockers,Marnal Head(ported and polished) Scheider HD valvesprings, SS Valves,Zero bal,TDO5H 17 C, K.V., OVC HP, Turbo X/S RFL, Aeromotive FPR, 950/1150 injectors, Walbro , MAF-T, AEM UEGO, Summit dig. CD Ignition. box , Mallory 67k coil,D2s.

#16 Caliber308

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Posted 20 July 2011 - 11:13 AM

View PostKomeuppance, on 19 July 2011 - 11:08 PM, said:

Agreed.  If you got money to throw away, go for it.  These parts lasted this long without the fancy stuff.

The manual will tell you a specification of the recommended oil, API GL4/GL5 for the trans in 80/90w, look on the bottle of any brand for this.  The LSD rear end specifies part # 8149630ex(superseeded to 3775610), which you have to get at the dealer ($40).  It doesn't spec an API or SAE for LSD's.

-Robert


I agree with you Robert about the Manual Trans Gear oil. But, I have used Sta-Lube GL-5 80/90wt Gear Oil in my Limited Slip Differential for 22 years now (no additive).I purchased the car with appox. 36,000 miles on it, I now have 152,860. One would think after 116,860 miles of using straight 80/90wt Gear oil (Compatible with limited- slip Differentials) "It states that on the bottle" ;) , that I would have had a failure by now ;) Yes, the LSD clutches still kick in when I slide it around a corner.Maybe I'm just lucky :(  But, I would suggest to newer members to use the additive and to follow the FSM instructions. "Do as I say, not as I do" :lol: Royal Purple, Red-Line.....Don't waste your money ;) It can be better spent for something else on your Starquest that you really need ;) Like Fuel Filters, Exhaust upgrades,Injector Clips,Replacement Hoses, a Analog/Digital Voltmeter, Sensors or other things that you need :)

Bill

Edited by Caliber308, 20 July 2011 - 12:03 PM.

87 ESI-R: J.E.s 8 to 1 .040 over, Tims roller cam, Roller rockers,Marnal Head(ported and polished) Scheider HD valvesprings, SS Valves,Zero bal,TDO5H 17 C, K.V., OVC HP, Turbo X/S RFL, Aeromotive FPR, 950/1150 injectors, Walbro , MAF-T, AEM UEGO, Summit dig. CD Ignition. box , Mallory 67k coil,D2s.

#17 slowquest

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Posted 20 July 2011 - 05:00 PM

View PostCaliber308, on 20 July 2011 - 11:06 AM, said:

Why? GL-5 Works for me in my Manual Trans.

Bill


http://www.stealth31...roilsummary.pdf

2nd page, 1st and 2nd bullet points.

http://www.valvoline...nz/prod0111.htm

Go down to the Duragear fluid, specifies GL4

Granted, for alot of people, the GL5 will work in their manual trans for a long time and cause no problems. Personally, I'd never use anything but the correct GL4 in mine (unless it's an emergency obviously)

Edited by slowquest, 20 July 2011 - 05:10 PM.


#18 Lance_S

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Posted 20 July 2011 - 07:36 PM

View PostIndiana, on 19 July 2011 - 10:37 PM, said:

Go to a Mitsubishi dealer and get a gallon of Diaqueen lsd gear oil and a gallon of plain gear oil.  THERE IS NO BETTER JUST ASK THE EVO GUYS.   Its what was in there when it was new.  Why in the world put friction modifiers in a gearbox?  Pull the pan off don't just drain it the pan has SLUDGE in it. You can not buy this at a Dodge dealer.


Indy,

The Diaqueen is for the gear box and the plain gear oil for the rear end or visa versa?  I am assuming I should also grab a new pan gasket to replace the old one when the tranny pan is dropped correct?

Thanks,

L
Hardpipes, MAFT, GM MAS, 3" DP, 2.5" exhaust, 950/1050 Trilogy injectors, K&N filter, Machined and balance flywheel 23 lbs, short shift, 88/89 tranny, HD ACT clutch, DSM EVO3 S16g ported (21 psi), polished and clipped, NJV head (ported), larger SS Valves, Schneider springs, Ajusa HG, Adjustable FPR, MBC, BOV, MSD coil, Walbro 255, ABS, EGR and balance shaft elim, 88/89 ECU, UEGO 02, new or rebuilt everything.

My feedback:  http://www.starquest...howtopic=127993

#19 Komeuppance

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Posted 20 July 2011 - 08:01 PM

View Postslowquest, on 20 July 2011 - 10:40 AM, said:

You SHOULD NOT use any fluid listed as GL5 in the manual transmission. GL4 ONLY!
Is this because of the "GL5 additives will eat yellow metals myth"??  

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-Robert

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#20 Caliber308

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Posted 22 July 2011 - 09:28 PM

View Postslowquest, on 20 July 2011 - 05:00 PM, said:

http://www.stealth31...roilsummary.pdf

2nd page, 1st and 2nd bullet points.

http://www.valvoline...nz/prod0111.htm

Go down to the Duragear fluid, specifies GL4

Granted, for alot of people, the GL5 will work in their manual trans for a long time and cause no problems. Personally, I'd never use anything but the correct GL4 in mine (unless it's an emergency obviously)

Thanks Robert. I posted this prior to reading your post above.

1987 Starion Factory Service Manual Volume no.1 Section 0-6 Recommended Lubricants:

Manual Transmission: API classification GL-4 or "HIGHER" ;)

Rear Axle (Limited Slip Differential): Mitsubishi Genuine Gear Oil Part no.8149630EX or "EQUIVALENT"  ;)

Any Gear oil that is recommended for use in a Limited Slip Differential will do.Equivalent means you don't have to use just Mitsubishis choice.I don't.


Bill

Edited by Caliber308, 22 July 2011 - 09:41 PM.

87 ESI-R: J.E.s 8 to 1 .040 over, Tims roller cam, Roller rockers,Marnal Head(ported and polished) Scheider HD valvesprings, SS Valves,Zero bal,TDO5H 17 C, K.V., OVC HP, Turbo X/S RFL, Aeromotive FPR, 950/1150 injectors, Walbro , MAF-T, AEM UEGO, Summit dig. CD Ignition. box , Mallory 67k coil,D2s.




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