Most Annoying Oil Leak EVER - The 1947 - Present Chevrolet & GMC Truck Message Board Network

toddtheodd · 12-12-2009, 08:40 PM

I am leaking oil from the oil dipstick tube, where it plugs into the block.
I've tried some of the rtv ultra black to seal it up, but it's not working. I can just reach down and pull it right out of the block like it's barely in there.
In fact, when I pull on the dipstick to check the oil, it pulls the tube out of the block.

Mt Man Chad · 12-12-2009, 08:53 PM

Pull it out, clean block and tube with brake clean and use JB weld.
Always works!

Sinister · 12-12-2009, 08:55 PM

Take the dipstick and dent it a little with some vice grips. Clean it and the hole in the block with some laquer thinner. Try a Q-tip for the hole in the block. Put some RTV on it and stick it back in. Edit: We posted at the same time.

big_al_71 · 12-12-2009, 10:57 PM

Buy your self a quality dipstick like the one from lokart and your problems will end.
I have gone thru stock dipsticks and the chrome from mr gasket then I switched to the lokar and it never happened again..

http://www.lokar.com/

unclewatts · 12-13-2009, 05:24 AM

Funny how such a little thing can be such a pain.

68C15 · 12-13-2009, 06:44 AM

there's something to be said about a new tube from the dealer combined with a good cleaning.

toddtheodd · 12-13-2009, 10:24 AM

It is a dealer tube. My original tube had broken off many years ago, and when I bought the cheap chrome one it wouldn't fit in the block... at all.
So I went to the dealership and bought this one.

Then, I rebuilt / overhauled the motor, and when I put it back together, the tube wasn't as hard to put in this time...

hayhauler71 · 12-13-2009, 09:26 PM

I have taken the dipstick tube out and grabbed a craftsman 1/4 drive socket that is usually tapered and put in the tube and a few raps on the socket with a hammer you can make it larger to give it a snug fit.

CEE1NG_RED · 02-01-2011, 03:08 AM

uPDATE?

Luvlegs · 02-01-2011, 06:30 AM

Quote:

Originally Posted by hayhauler71

I have taken the dipstick tube out and grabbed a craftsman 1/4 drive socket that is usually tapered and put in the tube and a few raps on the socket with a hammer you can make it larger to give it a snug fit.

had to read that 3 times - kept wondering why you make the hole bigger!

Stretch the TUBE.... got it.

Longhorn Man · 02-01-2011, 09:31 AM

shouldn't a dealer (stock replacement) tube have a tab to bolt it to the engine?

63chevyll · 02-01-2011, 09:53 AM

They don't bolt in, press fit only
Posted via Mobile Device

**'70_402** · 02-01-2011, 10:23 AM

Quote:

Originally Posted by Longhorn Man

shouldn't a dealer (stock replacement) tube have a tab to bolt it to the engine?

yes mine (i'm assuming it's stock) has a tab that matches up with a header bolt and it holds it in place..

tooter · 02-01-2011, 11:26 AM

Big blocks do, small blocks don't in pre 85 motors (driver side)

**'70_402** · 02-01-2011, 11:37 AM

Quote:

Originally Posted by tooter

Big blocks do, small blocks don't

Well they should.. it's a great idea... lol.

allengator · 02-01-2011, 11:38 AM

when you had your block rebuilt they probably went .010 over on the dipsick... you need a .010 over tube!!!

406 Q-ship · 02-01-2011, 11:49 AM

Before 1981 the dipstick tube is on the left side of the engine and only presses in. Get a brand new tube and do NOT sand on it at all, clean the hole in the block, and press it in. Use a 1/4 wrench or crowsfoot to tap it down into the block. Should not need any sealant (GM never used any on them) but if it makes you feel better a very small amount on where it fits in the block. Forget using those chrome POS, only the plain steel GM ones.

Longhorn Man · 02-01-2011, 01:21 PM

cool. It's been a long time since I had a small block and it was a newer one at that.

BearFlagRepublic · 02-01-2011, 01:49 PM

Quote:

Originally Posted by 406 Q-ship

Before 1981 the dipstick tube is on the left side of the engine and only presses in. Get a brand new tube and do NOT sand on it at all, clean the hole in the block, and press it in. Use a 1/4 wrench or crowsfoot to tap it down into the block. Should not need any sealant (GM never used any on them) but if it makes you feel better a very small amount on where it fits in the block. Forget using those chrome POS, only the plain steel GM ones.

I agree with that, I fought with trying to get mine to seal for the longest time until I realized that it would never seal properly as it was a chrome POS that the PO tried to put in there. It would leak oil like a sieve.

63chevyll · 02-01-2011, 06:39 PM

Quote:

Originally Posted by allengator

when you had your block rebuilt they probably went .010 over on the dipsick... you need a .010 over tube!!!

haha, thats good

CEE1NG_RED · 02-09-2011, 11:44 AM

...any updates?

**Dave** · 02-09-2011, 12:10 PM

Just curious, what year is the engine? Stock or later model (85 and up)

cam.man67 · 02-09-2011, 12:16 PM

Here's a question, then. Mine has two dipstick holes, one on each side of the engine. The one on the left is longer and has the dipstick in it, but the right one goes into the engine as well. It is blocked off, but I'm not sure why the engine even has it?

**Dave** · 02-09-2011, 01:11 PM

Most all of the new replacement 350 GM engines, like --Goodwrench/Target Master/Mexican engines had the dipstick tube provisions cast into the block for either side, this would allow GM to market these engines to a wide array of applications. Not just for trucks but passenger cars with a diiferent location for the tube.

GuyO · 05-27-2013, 03:01 PM

My Lokar tube broke off and the small end is still in the block. I tried to use a easy out but it wouldn't pull out. Any suggestions?

12-12-2009, 08:40 PM	#1
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	Most Annoying Oil Leak EVER I am leaking oil from the oil dipstick tube, where it plugs into the block. I've tried some of the rtv ultra black to seal it up, but it's not working. I can just reach down and pull it right out of the block like it's barely in there. In fact, when I pull on the dipstick to check the oil, it pulls the tube out of the block. __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY???

12-12-2009, 08:53 PM	#2
Mt Man Chad Registered User Join Date: Oct 2006 Location: Oakridge Oregon Posts: 1,865	Re: Most Annoying Oil Leak EVER Pull it out, clean block and tube with brake clean and use JB weld. Always works! __________________ 68 CST SWB - Gold/White 50th anniversary /TH350/Buddy Buckets/3.73 Posi/dogdish caps. 68 K10 Burb - Gold/White 327/SM465/NP205/3.73 "Daa Burb" build thread

12-12-2009, 08:55 PM	#3
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: Most Annoying Oil Leak EVER Take the dipstick and dent it a little with some vice grips. Clean it and the hole in the block with some laquer thinner. Try a Q-tip for the hole in the block. Put some RTV on it and stick it back in. Edit: We posted at the same time. __________________ Beat it to fit, Paint it to match... Last edited by Sinister; 12-12-2009 at 08:56 PM.

12-12-2009, 10:57 PM	#4
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: Most Annoying Oil Leak EVER Buy your self a quality dipstick like the one from lokart and your problems will end. I have gone thru stock dipsticks and the chrome from mr gasket then I switched to the lokar and it never happened again.. http://www.lokar.com/ __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild

12-13-2009, 05:24 AM	#5
unclewatts 70 Chevrolet=Obsession Join Date: Jun 2009 Location: nice ca Posts: 1,067	Re: Most Annoying Oil Leak EVER Funny how such a little thing can be such a pain. __________________ I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner)

12-13-2009, 06:44 AM	#6
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: Most Annoying Oil Leak EVER there's something to be said about a new tube from the dealer combined with a good cleaning.

12-13-2009, 10:24 AM	#7
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	Re: Most Annoying Oil Leak EVER It is a dealer tube. My original tube had broken off many years ago, and when I bought the cheap chrome one it wouldn't fit in the block... at all. So I went to the dealership and bought this one. Then, I rebuilt / overhauled the motor, and when I put it back together, the tube wasn't as hard to put in this time... __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY???

12-13-2009, 09:26 PM	#8
hayhauler71 Registered User Join Date: Aug 2009 Location: St. Paul MN. Posts: 1,996	Re: Most Annoying Oil Leak EVER I have taken the dipstick tube out and grabbed a craftsman 1/4 drive socket that is usually tapered and put in the tube and a few raps on the socket with a hammer you can make it larger to give it a snug fit.

02-01-2011, 03:08 AM	#9
CEE1NG_RED Registered User Join Date: Oct 2009 Location: LBC California Posts: 497	Re: Most Annoying Oil Leak EVER uPDATE? __________________ - 1967 Chevrolet C/10 SWB fleetside (New Project). - 1969 Chevrolet C/10 SWB fleetside (SOLD) - 2000 Ford Mustang 232 (DD) - 2003 Ford SVT Cobra "Terminator" 281 (Once in a blue moon driver/weekend driver)

02-01-2011, 09:31 AM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Most Annoying Oil Leak EVER shouldn't a dealer (stock replacement) tube have a tab to bolt it to the engine?

02-01-2011, 09:53 AM	#12
63chevyll gets board easy....... Join Date: Mar 2009 Location: Colorado Springs Posts: 717	Re: Most Annoying Oil Leak EVER They don't bolt in, press fit only Posted via Mobile Device

02-01-2011, 11:26 AM	#14
tooter Registered User Join Date: Dec 2010 Location: Moss Point , Ms Posts: 1,342	Re: Most Annoying Oil Leak EVER Big blocks do, small blocks don't in pre 85 motors (driver side) __________________ My Ole 67 http://67-72chevytrucks.com/vboard/s...d.php?t=505830

02-01-2011, 11:38 AM	#16
allengator Registered User Join Date: Dec 2010 Location: Burleson, Texas Posts: 596	Re: Most Annoying Oil Leak EVER when you had your block rebuilt they probably went .010 over on the dipsick... you need a .010 over tube!!! __________________ Allengator Outta the Blue (my band - available for hire in the DFW area!) 1980 Chevy SWB Pickup (build thread) 1951 Chevy Sedan Delivery 2004 Chevy Tahoe Z71 2011 Harley Davidson Street Glide 2018 Silverado Z71 Crew Cab Last edited by allengator; 02-01-2011 at 11:38 AM.

02-01-2011, 11:49 AM	#17
406 Q-ship Registered User Join Date: Oct 2010 Location: Largo Florida Posts: 632	Re: Most Annoying Oil Leak EVER Before 1981 the dipstick tube is on the left side of the engine and only presses in. Get a brand new tube and do NOT sand on it at all, clean the hole in the block, and press it in. Use a 1/4 wrench or crowsfoot to tap it down into the block. Should not need any sealant (GM never used any on them) but if it makes you feel better a very small amount on where it fits in the block. Forget using those chrome POS, only the plain steel GM ones. __________________ Lifes journey is not to arrive at the gate well preserved, it is to slide in sideways all used up and wore out yelling.....God what'a ride! Where patience fails, force prevails Stapp's Ironical Paradox "The universal aptitude for ineptitude makes any human accomplishment an incredible miracle."

02-01-2011, 01:21 PM	#18
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Most Annoying Oil Leak EVER cool. It's been a long time since I had a small block and it was a newer one at that.



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02-09-2011, 11:44 AM	#21
CEE1NG_RED Registered User Join Date: Oct 2009 Location: LBC California Posts: 497	Re: Most Annoying Oil Leak EVER ...any updates? __________________ - 1967 Chevrolet C/10 SWB fleetside (New Project). - 1969 Chevrolet C/10 SWB fleetside (SOLD) - 2000 Ford Mustang 232 (DD) - 2003 Ford SVT Cobra "Terminator" 281 (Once in a blue moon driver/weekend driver)

02-09-2011, 12:10 PM	#22
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,395	Re: Most Annoying Oil Leak EVER Just curious, what year is the engine? Stock or later model (85 and up) Last edited by Dave; 02-09-2011 at 12:11 PM.

02-09-2011, 12:16 PM	#23
cam.man67 Registered User Join Date: Jun 2010 Location: Jefferson, MD Posts: 2,397	Re: Most Annoying Oil Leak EVER Here's a question, then. Mine has two dipstick holes, one on each side of the engine. The one on the left is longer and has the dipstick in it, but the right one goes into the engine as well. It is blocked off, but I'm not sure why the engine even has it? __________________ '68 Dodge Dart 270, 225, 904, 2.76--"Lucy" 1996 Gmc 1500 Z71, 350, 4l60e, 3.73s 1995 Jeep Wrangler Rio Grande 2.5, AX5, 4.10s 1989 Toyota Pickup 22re, auto, 3.73

02-09-2011, 01:11 PM	#24
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,395	Re: Most Annoying Oil Leak EVER Most all of the new replacement 350 GM engines, like --Goodwrench/Target Master/Mexican engines had the dipstick tube provisions cast into the block for either side, this would allow GM to market these engines to a wide array of applications. Not just for trucks but passenger cars with a diiferent location for the tube.

05-27-2013, 03:01 PM	#25
GuyO Registered User Join Date: Nov 2011 Location: Kirkland, WA Posts: 343	Re: Most Annoying Oil Leak EVER My Lokar tube broke off and the small end is still in the block. I tried to use a easy out but it wouldn't pull out. Any suggestions?

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