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Oil leak - best solution is .....

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bobupp Seriously Crusin Dubber

111 posts · joined May 2004 ·

#402001
In my 71 beetle, there seems to be a consistent drip from the sump plug and some of the little bolts that hold the strainer thingy in (I think). Apart from overtightening the bolts, any other suggestions??
Always Learning!!

vern74 Fahrvergnugen

901 posts · joined Jan 2004 ·

#402003
A new gasket would be a good place to start !

Grey 57 Old Grey Cruiser

2,937 posts · joined Aug 2002 ·

#402022
Replace the nuts (open style) with dome nuts. (closed on the end) Oil will find its way down the threads of these studs. Dome nuts close the thread off.

BiX Veteran Volks Folk

2,499 posts · joined Sep 2002 ·

#402232
new gasket and use the brass washers on the studs with closed nuts. mkae sure the sump plate is flat also. nn[ Edited on 29-8-2005 by BiX ]
I have no sympathy for my car, only the wallet that pays for it!
Go hard or go home!!!!

oval TOFU Bitte, ein Bit!

2,946 posts · joined Jul 2003 ·

#403195
Grey 57 wrote:Replace the nuts (open style) with dome nuts. (closed on the end) Oil will find its way down the threads of these studs. Dome nuts close the thread off.
Ding! Ah! (lighbulb moment for me...)
...and Robert's ya father's brother...

Che Castro ankle straps

1,945 posts · joined Aug 2002 ·

#403231
Don't overtighten the nuts that hold the sump plate in. They are supposed to be 5ft/lbs. A lot of people overtighten them and it tends to strip the soft magnesium threads out of the case which leads to more leaks, also I have had a sump plate that was distorted slightly which caused leaks - I suspect the distortion was from overtightening. when you are tightening the sump plate, alternate sides as you tighten each nut.

What I did to fix this was get another sump plate that wasnt distorted, I checked that it was more or less flat along the contact area. new copper washers on all the acorn nuts and the sump, new gaskets and it hasn't leaked really for a while. Don't really need to use silicon but if you do, make sure it is the type that stays pliable and soft and is suitable for exposure to heat.
Jon

ACE_76

Former member ·

#403246
I wouldn't put silicone on. If it gets into the dome nuts, could cause leaks next time? Also won't adhere easily to an oily case bottom... And if it does it will be really hard to clean off in future.
The dome nuts can cause a leak if the studs are slightly too long (eg. thru being replaced or loose) as the closed end will hit stud before the Cu gasket is snug. Check all studs stick out of case the same length, and if one sticks out a bit more, turn it in -- by hand. If one sticks out more and can't be turned in, use 2 (or even 3) Cu gaskets (under dome nut) on that one.
Overtightening the nut might cause the stud comes out next time when trying to undo!
The best way to combat leaks other than the above is to use wheel bearing grease as the sealant. This should have a high enough melting point to stay in place, but cleans off easily next time. Can put on the theards of each stud, or smear on each surface to be sealed.

Grey 57 Old Grey Cruiser

2,937 posts · joined Aug 2002 ·

#403334
Good points Ace on the depth of the dome nuts.
I wouldnt let silicon near any VW motor. Gasket cement or VW case glue only for me. 👍

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 ·

#403675
That sticky Permatex brown goop stuff seals it all well
Pay your debts, CxxT

76camper Fahrvergnugen

884 posts · joined Jan 2005 ·

#403956
I wouldnt let silicon near any VW motor. Gasket cement or VW case glue only for me
fair enough, i was refering to this black silicone like glue. Dries super strong but super flexible and withstand really high temps.

Your right, it wont stick to an oil surface... like most glues.

your best bet is just a new gasket and maybe a bit of sealer of ur choice.
http://www.bytevision.com.au/dee/kombi/index.htm

plough Casual Dubber

49 posts · joined May 2005 ·

#404018
I had this same problem with my notchback, until i brought a new gasket kit from local volks guy (gaskets & brass washers for all bolts) and thats now fixed the problem. I replace them every oil change now as it only costs round $5.

kevo Officially Full-On Dubber

371 posts · joined Mar 2005 ·

#405591
ALWAYS HAVIN THE SAME PROBLEMON MY 76 BUS, ENGINES BEEN OUT SO MANY TIMES NOW,

AAAAAAAAHHHHHH f**K IT I JUST KEEP TOPPING THE OIL UP😂
76 baywindow kombi - V8 & Weddle racing diff and gearbox
Daily driven beach cruiser

Robo Compulsive Aussie Vee Dubber

4,491 posts · joined Feb 2003 ·

#405660
Yeah ya shouldn't have to use any sealant at all, new gaskets and washers. Thats all I use on my 56 and she is oil tight, no drips.
Rob....
Boxer Power
Member of DMLRK.....Die Mittler Lebuns Resto Komeradschaft