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C6 is leaking

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ReneH

C6 is leaking

Hi together,

some days ago, my C6 starts leaking. I haven't moved the car. Some of you know my story...

So it starts suddenly. As you see, I've mounted a completely new pan with lube locker seal and additionally a special silicone. So I can't imagine that the pan is leaking. It seems that it comes more from a higher point and drips on and runs around the pan. But I can't identify the source...

Any tips about common leaks?

René's Profile

Bronco 1986 Ford Bronco XLT 302/347 stroker with 351W EEC-IV and 351W factory cam C6 gearbox. Jeep 1986 Jeep CJ7 256 I6 with T5 gearbox. Buggy 1972 HAZ Buggy 122 Ford Cologne V6
Baron 1994 Chrysler LeBaron convertible 183 V6 4-speed automatic

85pig

Re: C6 is leaking

Shift shaft seal and dipstick tube are popular link points as well as the pan. I may be wrong, but aren't the Lubelocker gaskets supposed to go on dry?

1985 F150 4X4 300 I6 4-Speed
1970 Torino Cobra "Twister Special" 429CJ 4-Speed
1965 Mercury Comet Caliente Convertible 331 5-Speed

Bruce moose4x4

Re: C6 is leaking

By the pics, it looks like the dipstick tube is leaking. See how clean the aluminum case is under it, compared to the case around it?
The case under the shift linkages looks dry.

Bruce aka Moose--1978 F250 LWB Flareside, Dana 60's w/ 4:10's, 460, c6

Whisler

Re: C6 is leaking

I had a dipstick tube that leaked because there was a hole in the groove for the O-ring. Drove me crazy trying to find the leak.

God Bless
Whisler

Frankenstein: 1989 F250 4X4, C-6, Hurst Pro-Matic 2 shifter, carbed '84 351W, Edelbrock manifold, Edlbrock AVS, DS2 ignition, 3G alternator, JBA shorty headers, no cats, dual exhaust with H pipe.

ReneH

Re: C6 is leaking

In reply to this post by Bruce moose4x4

Ok, thanks for all answers.
I'll also though about the tube, but can't imagine that the oil stands in this height...
I'll check it.

Is the tube easy to pull out? Only hold by the O-Ring?

Gary Lewis

Re: C6 is leaking

Administrator

There is an o-ring at the bottom and a stand-off towards the top, usually to one of the engine/transmission bolts.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

85lebaront2

Re: C6 is leaking

Administrator

In reply to this post by ReneH

Rene' when the truck sits, the torque converter will drain back into the pan over time raising the level until it will leak. When the tube is out, check where the level marks sit with the dipstick in it.

Bill AKA "LOBO" Profile

"Getting old is inevitable, growing up is optional" Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator Wife's 2011 Flex Limited Daily Driver 2009 Flex Limited with factory tow package Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413

ReneH

Re: C6 is leaking

Thanks Gary for the exploded drawing and the information.

Thanks also to Bill. I will check this later or tomorrow...

ReneH

Re: C6 is leaking

Ok, the tube O-Ring was the problem...flatend to not more existent...

I've changed it and now it seems to be dry...

Thanks for your help.

Gary Lewis

Re: C6 is leaking

Administrator

Glad you got it sorted, Rene.

Gary, AKA "Gary fellow": Profile