Needs expext opinion on this. On transmission fluid, many says that you can use regular or synthetic oil as your fluid and it will not harm your trans. Many also says it is not advisable and you can only use the prescribed transmission oil or fluid. What's your opiniion guys???
Many of the high end synthetic ATF's are not only compliant with the Dextron standard, but are compliant with almost every ATF standard in place today. What you want to buy is a synthetic ATF that as atleast the Dexron III spec.
Quote:
AMSOIL
ATF Exceeds the following performance specifications
GM Dextron ll and Dextron lll
Ford Mercon and Mercon V
Chrysler ATF+ thru ATF+4 MS-7176E, MS-9602D
GM Strasbourg (European Imports) and Opel
Caterpillar Powershift TO-2 & TO-3
Allison C-3 & C-4
Voith Commercial Transmissions
Power steering units recommending ATF
Multiple Industrial Hydraulics
AGCO/Deutz-Allis/White; Power Fluid 411
Infinit, Nissan; Through 1995
Porshe
Hyundai
Mitsubishi Diamond SP
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I recommend calling the dealer in your area or an oil change place and see what is recommended for your car in your area. Different climates require different grades and I don't want to lead you in the wrong direction.
I made the mistake last winter of obeying the service recommendations in my owner's manual and had the MT oil replaced in my 81 Corolla. It used to shift fine, but after the change it took a lot of coaxing in the cold Minnesota winter. One really cold day (about 20 below) I had to push down the clutch in order to start the car and hold it down for about 10 minutes to stop it from stalling until the oil warmed up a bit. I guess changing the oil cleaned out a lot of the gunk that was making for a smooth shift, and I suspect it had never ever been changed so maybe it wasn't the viscosity it used to be. The replacement oil was supposedly up to spec. for my car (according to the mechanic), but I think it was just too thick at 0°F. I finally found some synthetic transmission oil that I had seen recommended and had that put in instead. Cold shifting is a lot easier now -- whatever clunkiness is probably typical of a 23 year old gearbox with 150,000 miles. Anyways, synthetic is probably good if you're in an extreme environment (not the Phillipines if I see your location right ), but may be tricky if your seals aren't tight. Of course I'm willing to do this on an '81 but you should check what your car is supposed to use first.
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1981 Corolla Wagon, 5-speed, 159k miles-- my winter wheels
1981 Corolla Wagon, AT, 125k miles-- my summer wheels
Limnos, thanks for the info. I have used synthetic oil on my trans but was a little thick according to my mechanic. My friend recommended to put STP oil treatment and mix it up with my trans oil 1:10 ratio and so far it works out fine. I didnt drain my transmission oil instead add some oil in it so I think that started all the problems and noises from my tranny. The oil treatment I thinks solves the problem.
Hi! I have recently got a Toyota Corolla DX with Manual transmission (MT).
The prev owner told me (and actually it is) a transmission leak. I would like to fill up the oil, but I do not know which is the refill plug.
I noticed two plugs on the MT facing towards the radiator that might look like refill plugs.
It is a big one (7/8 inch or around 21 mm) that is around the middle of the radiator face wall of the manual transmission.
Also, there is another one, much smaller, and below that one. It is facing the radiator also. That one is a small one (something like 10 mm or 13 mm ). Thought it might be the drain plug, but it is not exactly at the bottom of the transmision.
Which one is the correct plug for refill? The bigger one? Or the smaller one?
Originally posted by Limnos I made the mistake last winter of obeying the service recommendations in my owner's manual and had the MT oil replaced in my 81 Corolla. It used to shift fine, but after the change it took a lot of coaxing in the cold Minnesota winter. One really cold day (about 20 below) I had to push down the clutch in order to start the car and hold it down for about 10 minutes to stop it from stalling until the oil warmed up a bit. I guess changing the oil cleaned out a lot of the gunk that was making for a smooth shift, and I suspect it had never ever been changed so maybe it wasn't the viscosity it used to be. The replacement oil was supposedly up to spec. for my car (according to the mechanic), but I think it was just too thick at 0°F. I finally found some synthetic transmission oil that I had seen recommended and had that put in instead. Cold shifting is a lot easier now -- whatever clunkiness is probably typical of a 23 year old gearbox with 150,000 miles. Anyways, synthetic is probably good if you're in an extreme environment (not the Phillipines if I see your location right ), but may be tricky if your seals aren't tight. Of course I'm willing to do this on an '81 but you should check what your car is supposed to use first.
Thats one hell of a theory, but ever stop to think the oil in there was good shit to begin with? (like maybe Redline or something?)
Shifting would be harded with lower viscosity oils, you'd start to think your synchros are going.
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The replacement oil was supposedly up to spec. for my car (according to the mechanic), but I think it was just too thick at 0°F. I finally found some synthetic transmission oil that I had seen recommended and had that put in instead. Cold shifting is a lot easier now -- whatever clunkiness is probably typical of a 23 year old gearbox with 150,000 miles. Anyways, synthetic is probably good if you're in an extreme environment (not the Phillipines if I see your location right
), but may be tricky if your seals aren't tight. Of course I'm willing to do this on an '81 but you should check what your car is supposed to use first.
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