80 Series LC gearbox question

Submitted: Monday, Feb 27, 2006 at 15:32
ThreadID: 31212 Views:2066 Replies:7 FollowUps:1
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After travelling for about an hour a gear oil smell develops from breather, I assume gearbox breather worse when towing van. There are no leaks, gearbox & transfer case are on level,centre diff lock not engaged. Does anyone or has anyone had similar?
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Reply By: age - Monday, Feb 27, 2006 at 15:46

Monday, Feb 27, 2006 at 15:46
Yep - sure do get same problem.

Usually only occurs when vehicle working pretty hard (towing) and have negative pressure in vehicle - ie AC off and only one window partially opened. Must come up through gear lever boot. A little better when I swapped to Syntrax oil (doesn't smell quite so bad). Vehicle has done it all its life (1990 model)

AnswerID: 157311

Follow Up By: Goughy - Monday, Feb 27, 2006 at 16:22

Monday, Feb 27, 2006 at 16:22
Me too, 92 TD, same smell but I get it anytime after about 100k's of travelling with or without a load, I was told it may be a slight overfill of oil in the diffs, don't know how true this is or the theory behind it, but if you find a solution (I will try the Syntrax) I would be very interested
thanks fellas.
FollowupID: 411565

Reply By: Max - Sydney - Monday, Feb 27, 2006 at 16:53

Monday, Feb 27, 2006 at 16:53
Same with mine - 1997 model, done it since new. More so when heavily loaded, or a hot day. The gearbox and transfer get stinking hot in use, and not at all surprising that you get a bit of an oil smell. I also get near the start of a trip what I reckon is burning of bits of grease thrown off the universals on the outside. Smell it when you open the drivers door after a couple of hours running, generally disappears after a half a day.

Been the same for 240,000 km so I reckon its not a problem, and suggested slight overfill is unlikely.

:-) Max
AnswerID: 157318

Reply By: ROBST - Monday, Feb 27, 2006 at 17:54

Monday, Feb 27, 2006 at 17:54
Their are TWO rubber boots the one on the inside on the gear stick and under that one is another from the body to the gear box,and can crack as mine did giving me oil smells inside.also if it is cracked it will let dust and water into the gear box.
From memory about $35,not hard to change.
As my 80 only had 130000klms on it when i found it,i would recomend any one
with an 80 to check that rubber boot any way.I had the oil smell for a while but
only found it when i droped the box out to do the clutch.
I only ever made one mistake
and that's when I thought I was wrong!

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AnswerID: 157327

Reply By: Peter 2 - Monday, Feb 27, 2006 at 20:58

Monday, Feb 27, 2006 at 20:58
What happens also is that the 'bottom' boot gets oil on where it fits around the top of the gearbox and slides up opening up the top to dirt and water ingress and hot oil smells to escape.
the cure was to clean it up and then put a cable tie around it.
the boots can also crack and can also not be fitted correctly to the floor hole allowing smells to enter cabin.
AnswerID: 157373

Reply By: Member - Matt M (ACT) - Monday, Feb 27, 2006 at 21:31

Monday, Feb 27, 2006 at 21:31
Thank you all.

I always assumed that I was the only one with an odour problem (94 GXL). Now that I know there are others who live with the shame of uncontrolled smells, I can walk a little straighter and hold my head high again.

Is there a focus group I can join to discuss the problem with like minded people and really come to terms with it?

I will be checking the inner rubber boot though.
AnswerID: 157380

Reply By: gertie - Tuesday, Feb 28, 2006 at 20:47

Tuesday, Feb 28, 2006 at 20:47
Thanks heaps everyone for your input--will be looking into your sugestions & will let you know if they work--ours has very low k's & has been around for ages but its great to know others have same problem--not that it really is a problem i guess--still great vehicle aye
AnswerID: 157615

Reply By: Bede & Trish Watts - Tuesday, Feb 28, 2006 at 20:53

Tuesday, Feb 28, 2006 at 20:53
I have a 1991 GXL I don't have the smell but it gets hot around the gearbox&transfer case inside the cab dose anyone get this problem.
regards Bede
AnswerID: 157621

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