gear oil change ?s

[84carrera]

Hi everyone,

This week I am planning to change my gear fluid which has been in the car for 120,000 miles.

I have searched the archives and it seems like it is pretty simple, I am going to get a pump to put the fluid back in, and buy a 17 mm hex nut. i plan on purging my system before I put in Swepco 201.


My question is any normal 80/90 gear fluid ok to use, i was going to use valvoline.

I was also wondering how much gear fluid I should put back in, and if the 17 mm hex nut is the right size.

thanks

john

[Superman]

The plug was discussed in a VERY recent thread. I have not been unable to get the 17mm female plugs out, but they have at times been a bit snug. I think Warren suggests a steel replacement with 19 or 21 mm male end.

Also, you will find that there is no gear oil more recommended than Swepco. It is not easy to find, but Pelican can get it, and a few other places. It is the only stuff you should use, according to my understanding. A little spendy at around $40 per gallon.

I'd use a pump, availabel cheap at yoru local hardware store. You fill it until it dribbles back out the fill hole which is about halfway up on the drivers side of the tranny.

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'83 SC

[Jack Olsen]

Check out this recent thread:


http://www.pelicanparts.com/ultimate/Forum3/HTML/009744.html

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Jack Olsen
My Rennlist home page
My Pelican Gallery page My Porsche Owners Gallery page

[Jack Olsen]

Also: let the gear oil sit out in the sun before you put it in. It thins out when wam. Your forearms will thank you later.

[movin]

I like Red Line 75W-90 gear oil. It's a true synthetic and in my experience better than Swepco. I've tried Swepco, Red Line, and Mobil 1; even Mobil 1 is better than Swepco. Gear shifts were smoother and with less effort. Some of the popularity Swepco has gained is from the guys who have the earlier transmissions (pre G-50) where it works just fine. Just my opinion.

[84carrera]

thanks for yhe quick replies,

I was planning on cleaning out my system since the oil is so old before i put in the more expensive 201. Once i put the 201 in I dont plan on changing it again for a while.

i planned on reusing the same plugs with a couple of wraps of teflon to make it easier when I put the 201 in.

Flushing my system may be overkill, do you think I should just put the 201 in.

thanks

[Jens Wendorff]

Anyone with experience using teflon tape for sealing the tranny plugs???

I know that its most likely to fail on pressurized oil-lines...

Thanks, Jens

[Jack Olsen]

The fittings on my transaxle pump and cooler use teflon tape. I've heard it's not correct for high-pressure oil lines, as you mention.

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Jack Olsen
My Rennlist home page • My Pelican Gallery page • My Porsche Owners Gallery page

[Roland Kunz]

Hello

The old plugs have a slight wedge shape ( tapered ? ). Using teflon will not hurt. If you use Teflon in any application don´t turn back ! In germany teflon tape is aproved for low temperature and medium high pressures. The trany is not hot and has no pressure.

Get the 0,5 bootles and one more then needed ( if something goes wrong ). Then heat them up with a waterbath or hot air, not everyone does live in the sunny valley and has a blck underground to soak the heat :-)

If you are under the car insert the filler tube from the rear and then push the bootle upwrds untill it is cramped between trany and rearseat bucket. If it is still to slow then punch a small hole in the top.

If you have no chance to lift level the open the plug while the car is up and after that ypu let the car down. Sit on the rear valance and shake a bit down as the rear will still be to high or remove the tires to flat leveling until the trany is empty. Then put the tires on end lift the car from the driverside and fill up what the books say.

Hope you are grown up and I don´t have to teel the basics. soild lifter with external support stands, googles, don´t rush as speed kills.

No need for flush.

You can use the newer 75/90 trany oils. It will make a slight improvment in shift feeling but slower the synchronization. I recomen that for normal use in colder climates.

If you have a limitet slip then only use Rotella or SAF-X.

Sorry never had any Redline or Swepco. But even the worst oil is better then no oil.
And Pennzoil, Valvoline, Exxon, Mobil, Liqui Moly, Castrol are fillings in most official Porsche Shops in germany.


Grüsse

[ServerDude]

My tidbit contribution...

A lot of people talk about using pumps and turkey basters to fill the tranny... I just did mine a couple weeks ago and took some digital pictures of my "contraption," but the little digital webcam didn't survive the test drive on the spoiler. At least it was cheap.

Anyway, I use a 6' long replacement heater hose that fits perfectly into the tranny fill plug. Run it out past the drivers' side wheel as "constantly upward" as possible. I then tape the other end to the top of my workshop light tripod and using a funnel pour slowly. Works like a charm... and besides, why else would I have a hose that was otherwise designed to convey antifreeze in my garage.


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Brian Smith
'91 C2

[This message has been edited by ServerDude (edited 06-12-2001).]

[jlex]

Never used the pump; traditional method of filling it would be use of an oil suction gun. Get the gun... it's cheap enough (under $10). Can use it for lots of other projects on your other cars.
Teflon tape's good. Used it on my Carrera last summer. We're not worried about leaks here, just making it easier the next time around to get out.
regards,
jlex.

[Roland Kunz]

Hello

Here in europa we have the oil in 0,5 and 1L plastic bootles with pull out hose nozzle.

Makes it easyier but i know the hosetrick too if you use clear pvc you can see the oil come down. If the trany is overfilled the just let the hose hang down deeper then the hole to stop filling.

Grüsse

[Mike Feinstein]

Wouldn't anti-seize compound provide the same result as T-tape?

[Jens Wendorff]

Well, Anti seize does what the name says.
But it does not help sealing.
My plugs also leak slighly (as nearly everything), and every drop less is an achievement. Teflon tape is primarily used to help sealing, intended as a replacement for hemp (?word?)used by plumbers.

Jens