I see the transmission pan gasket leaking a little, not dripping at all. I went and check the bolts and some are pretty loose. Can i just re-tighten the bolts down and be done? please advise

Thanks

 

Drain all the oil, unscrew all the bolt, take out oils pan then get new gasket from dealer, then add 2 quart of ATF transmission oil from Toyota or Lexus dealer.

 

Ok thanks, i was trying to stop it for now till i have time to change it.

 

Over the 30 years I've been tinkering with cars it's been hit or miss for me when tightening loose oil pan / transmission pan bolts to stop a very slow leak or seepage. If you do decide tighten them up I'd recommend torquing them to the proper value and doing it in the correct sequence if you can. Unfortunately I don't know what the torque value or sequence is for these transmissions.

 

I dont have the specs or a torque wrench, i figure just go around and just firmly tighten the bolts down for now. Should help the seepage. Thanks

 

I try to look up spec for transmission torque, but can't find any information so we just hand tight.

 

Sometime these seal above transmission also leak.

 

I'd recommend NOT torquing the bolts. More than likely you'll increase the speed/size of the leak. Either replace the leaking gasket or nurse it.

The one time I thought torquing oil pan bolts to spec would help my leak; ended up being quite the opposite and I almost blew a motor due to lack of oil after a major increase in leaking oil.

 

Ok i look into that also, Thanks

 

So far i just firm tighten them down and so far so good. Hope it fix it.

 

^That's good to hear; just keep a close eye on it. If you park inside, use a piece of cardboard under the car to help monitor for leaks.

Does our trans pan use a composite gasket or a rubber gasket? My oil pan story involved a rubber gasket, which could result in different results if using a composite gasket.

 

Am not sure what material its on there, i know that its oem from original. It looks like some kind of composite to me while i was tightening the bolts up.Yes i park in the garage and will be monitor it. Thanks

 

Torque for the transmission pan bolts is 39 in-lbs.

Here is a pic of the transmission gasket:





Cork-rubber?

 

Yes look like Cork/rubber gasket on mine.
Thanks

 

Look like still seep a little, may have to change gasket. My buddy been driving his IS350 for years with seepage and said transmission still drive great. lol