vyhanh Posted June 17, 2004 Share Posted June 17, 2004 Hi, Last few days, I noticed that there was leakage in the differential (I think that what it is: the grey metallic looking odd shape behind the engine oil pan). It leaks along (ie across the car) the joint. I tightened all the bolts without any success. Any help? Difficult to fix? Thanks Quote Link to comment Share on other sites More sharing options...
Mr_Ferrari Posted June 17, 2004 Share Posted June 17, 2004 Vyhanh from what you describe, it sounds like transmission pan. The rear differential sits between the two rear wheels. The transmission pan is know to leak if the gasket has not been replace on regular basic. Quote Link to comment Share on other sites More sharing options...
99lsguy Posted June 17, 2004 Share Posted June 17, 2004 Like Mr. Ferrari says............its not the diffy. Your may be looking @ the tranny itself......or the pan?? is it retacngular with the long sides running from front - back under the car??? Is the fluid a tinted red color?? If it is the tranny pan: You'll need new gasket goo around the entire pan.....a continuous bead 2-3mm in width: Part NO 08826-00090, Three bond 1281 or equivalent Mine has 19 bolts......torque is only 65 in lbs per bolt. Finger tighten and alternate sides as you tighten W/ wrench...... Quote Link to comment Share on other sites More sharing options...
99lsguy Posted June 17, 2004 Share Posted June 17, 2004 BTW, While you have the pan off: check and clean the ATF metal screens on the oil strainer. remove, clean, and replace the magnets located in the pan that collect worn shavings. 99 Quote Link to comment Share on other sites More sharing options...
vyhanh Posted June 18, 2004 Author Share Posted June 18, 2004 Hi, Thanks for all the tips. Learned something new everyday. What a forum ! :P I definitely think it is the trans pan (leak is at middle of car, behind the oil sump/pan). Fluid is red in color. Quote Link to comment Share on other sites More sharing options...
vyhanh Posted June 19, 2004 Author Share Posted June 19, 2004 Just took the car to JiffyLube. The manager took a look and said the oil seal (between the oil sump and the trans pan) was the culprit. Any thought? Quote Link to comment Share on other sites More sharing options...
99lsguy Posted June 21, 2004 Share Posted June 21, 2004 Just took the car to JiffyLube. The manager took a look and said the oil seal (between the oil sump and the trans pan) was the culprit. Any thought? Oh........ That could be the rear main seal :o If so, this is not good - a $20 gasket plus $500 labor to get the tranny off :( Quote Link to comment Share on other sites More sharing options...
vyhanh Posted June 22, 2004 Author Share Posted June 22, 2004 Hi, Questions: 1. Can I leave this leak for a while? 2. What type of oil is leaking (tran, diff, P/S, Engine)? I think it kind of red in color. 3. The dealer will look at it on Thursday. How can I tell that he diagnoses the problem correctly? 4. By flushing the transmission and using synthetic engine oil, would these have corrupted the seal (if it was the seal)? Thanks VH Quote Link to comment Share on other sites More sharing options...
90LS400Lexus Posted June 24, 2004 Share Posted June 24, 2004 If the fluid is red, it should be transmission fluid. Engine oil is brown (if clean) or black (if dirty). Good luck. Quote Link to comment Share on other sites More sharing options...
vyhanh Posted June 24, 2004 Author Share Posted June 24, 2004 Just got the damage estimate from dealer: Rear Main Seal $1400 + tax. Temp solution: Keep an eye on the oil !!!! :cries: :cries: :cries: Quote Link to comment Share on other sites More sharing options...
99lsguy Posted June 24, 2004 Share Posted June 24, 2004 Just got the damage estimate from dealer: Rear Main Seal $1400 + tax. Temp solution: Keep an eye on the oil !!!! :cries: :cries: :cries: Sounds like a good idea........... Drive it till it's hemorraging and then let it go............ Quote Link to comment Share on other sites More sharing options...
wandawoods Posted June 24, 2004 Share Posted June 24, 2004 Just got the damage estimate from dealer: Rear Main Seal $1400 + tax. Temp solution: Keep an eye on the oil !!!! following on the other thread: http://us.lexusownersclub.com/forums/index...howtopic=10615& did it happen right after jiffy lube's machine flush? Quote Link to comment Share on other sites More sharing options...
vyhanh Posted June 24, 2004 Author Share Posted June 24, 2004 No, the flush was done 11/03. The leak only happend last week. Just wear and tear I guess or was it because of the synthetic oil (Mobil 1)? Quote Link to comment Share on other sites More sharing options...
wandawoods Posted June 25, 2004 Share Posted June 25, 2004 how could mobile 1 engine oil get into your tranny!? if it did, u r in big no-no alright! so, I would guess whatever tranny leaking problems you are having should not be anything to do with Mobile1.... Quote Link to comment Share on other sites More sharing options...
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