| Author |
Message |
magoo (Magoo)
| | Posted on Thursday, August 23, 2001 - 11:41 pm: | |
P.S. The answer to your question RE: use of reg. gear oil. Yes it can cause noise. Usually after time though. Unless you had reg. oil in there all along. Be sure to use limited slip, compatible gear oil when you change it. Preferably Mobil 1 synthetic 90 wt.. |
magoo (Magoo)
| | Posted on Thursday, August 23, 2001 - 11:30 pm: | |
Mike I would use Mobil 1 synthetic 90 wt. gear oil compatible with limited slip differentials. The testimonies here on the chat line along with my own, point to a much easier shift and smoother operation of the transmission in colder weather. |
'75 308 GT4 (Peter)
| | Posted on Thursday, August 23, 2001 - 3:19 am: | |
The gaskets should still be okay, but its a judgement call at that time. If it comes off in about 37 pieces, you'll need a new one. If the pan has been leaking alot, chances are it'll be preserved and come off in one piece. Dry it THOROUGHLY and add sealant and replace.
I've seen as many suggestions of brands of gear oil, as people who posted. What I'd choose? (Insert brand name here) 75W/90 GL-5 with LSD additives. |
Mike (Dollartaker)
| | Posted on Wednesday, August 22, 2001 - 4:06 pm: | |
OK here we go, I got the 12mm wrench and the gearbox oil level is fine. When I loosened the plug, oil drained out indicating that the mech. topped it off ok. If the mechanic put in regular gear oil, would that by chance give me the noise under load? The mechanic is not a dealership but does work on Ferraris and porches regularly. I have seen the Ferraris in there quite often. This of course does not mean that they will pay attention to detail. What gearbox oil should I get and from where? So far, this has been quite helpful. I told the flatbed to disregard picking it up. The leaks are not major, but need to be addressed. I think that I will give it a shot. Should the gasket still be ok if I remove the pans? |
'75 308 GT4 (Peter)
| | Posted on Wednesday, August 22, 2001 - 1:00 pm: | |
The plug hex is 12mm. The nuts used to secure the cover are 5mm and aren't torqued down to a specfic measurement, they are just snugged down tight. If you have major leaks, it could be that they didn't change the gasket and just slapped it on dry. I use Permatex on all of my gaskets.
Not to mention any names, but who did your 30K? A reputable F dealership? A specialist? Jiffy Lube? Whoever did it, probably just put regular gear oil in the trans and like Magoo said, the stuff going in should have LSD additives in it for the diff. |
Mike (Dollartaker)
| | Posted on Wednesday, August 22, 2001 - 10:38 am: | |
I just had the 30k done and I am having the car picked up this afternoon to have them fix it. I will not risk the trans. I went out to find the right size allen wrench for checking the fluids but to no avail. Is the right size 12? The oil leaks are coming from the bolts on the covers it looks like some were changed to larger sizes(PO)If they are not torquing to specs, they probaly will need to fix. What type of metal is the trans?
Thanks
Mike |
magoo (Magoo)
| | Posted on Wednesday, August 22, 2001 - 8:26 am: | |
Mike if you have any doubts "CHECK IT." The stands go under the oval frame rails. They also have to be under the front to make the car level. If not you will get a false reading. Did you drain the clutch reservor and if so did you replace the oil and refill from the plug on top of the reservor when refilling the crankcase. Also did you use gear oil compatible with limited slip differentials? This is not a thing to take lightly. If you are low on oil in there you could wipe out the entire gearbox and differential. If you are not using the correct oil the diff. clutches will chatter and give you a noise, usually on a turn. BE SAFE,CHECK IT. If you have a owners manual everything is in there about the gearbox oil change. If you don't have a OM and you are not sure you better find out before driving it. MAGOO |
Peter Boray (Gts308qv)
| | Posted on Wednesday, August 22, 2001 - 7:12 am: | |
It is also essential to remove the large plug over the limited slip transaxle and pour a pint of fluid in there as well. This area holds little oil although drains when the transaxle is emptied, it remains dry until the car is started.
If not preprimed, the diff could run dry for a while and damage the limited slip clutches. |
Mike (Dollartaker)
| | Posted on Wednesday, August 22, 2001 - 7:08 am: | |
Magoo,
If I jack up the rear of the car at the appropriate spots, where should I locate the jack stands?(safest) Also, The car is running fine, it might be my overcautious mentality. The slight thunking is only under load. If I had a more critical loss of fluid, wouldn't I be noticing slippage or some noticable problem?
Any other comments from anyone would be helpful. |
magoo (Magoo)
| | Posted on Wednesday, August 22, 2001 - 12:24 am: | |
P.S. I hope no one cross threaded the drain plug in the bottom of the gear case at the drain. |
magoo (Magoo)
| | Posted on Wednesday, August 22, 2001 - 12:22 am: | |
Who knows. Did you do the gear box change yourself or did someone else do it. I think you should put the car up on jack stands,level,or a lift and pull out the upper fill plug on the gearbox and put your little finger in the hole. If you can touch fluid on the first joint of your finger at the hole then you are Ok. If not add gear oil until it runs out of the fill hole. Hope you didn't hurt anything. |
Mike (Dollartaker)
| | Posted on Tuesday, August 21, 2001 - 7:28 pm: | |
Can someone help me? I recently had my 30k done and now a leak has sprouted down on the gearbox or, oil pan(dry sump euro) Now all of a sudden I hear a subtle thunk thunk under the gearchanger under heavy acceleration. This noise is not present unless under heavy load. Could I have lost most of my gearbox oil and if so, what would be the signs?
Thanks
Mike |
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