Bj 74 blowing oil out exhaust ???

[mojoloco]

HELP!!! CHANGED ENGINE OIL AND FILTER...WENT FROM SYNTHETIC TO REGULAR OIL (CASTROL GTX FOR DIESEL 15W40)AND BURNING OIL LIKE CRAZY...I MEAN SOME SUN BLOCKING CLOUD...ALSO NOTICED OIL COMING RIGHT OUT THE TAIL PIPE...JUST GOT THE EXHAUST DONE..2.5 FROM TURBO BACK WITH A AERO TURBINE 2525...SOUNDS AWSONE...JUST GOT TO GET THIS OIL PROBLEM UNDER CONTROL
WAS USING ROYAL PURPLE FOR THE LAST 2 YEARS BUT DECIDED TO SWITCH BACK TO REGULAR OIL..WILL DRAIN AND GO BACK TO OTHER IF NOT MAY BE LOOKING AT A NEW TURBO OR AM I MISSING SOMETHING???

 

[lshobie]

check your turbo - could have blown the seals.

 

[Greg_B]

When the oil seal in the CT-26 on my 13BT went south I had a mosquito killing cloud behind me when the turbo would spool up. Just simply went one day. Another indicator was the oil that had forced its way from around the pyro probe (post turbo).

 

[cicak]

Sounds like the CT-26 Exhaust seal has blown - if you put colour die in your Diesel tank you could have pretty colour coming out and not just the black or grey smoke

Genuine parts kit alone just cost me almost $300USD for my blown CT26 turbo.

 

[mojoloco]

Exhaust smoke

WENT BACK TO ROYAL PURPLE...SMOKE IS CLEARED UP AND NO OIL OUT OF THE EXHAUST
LOOKS LIKE WHEN YOU START USING THAT OIL YOU HAVE STICK WITH IT;p

ANYWAY WILL DRIVE LIKE THIS FOR SUMMER AND LOOK FOR TURBO UPGRADE FOR WINTER PROJECT

THANKS

 

[Stone]

Wow...that seems strange to me. I would have also thought that the seal went on the turbo.

 

[lshobie]

Maybe royal purple doesn't smoke much when it is being burnt? Check for oil consumption though. Doesn't make sense if you blow through one type of oil and nothing with a different type -- especially not immediately.

louis

 

[mojoloco]

Will keep you posted

 

[cicak]

Intrigued did you accidently spill any oil? is the oil filter tight and not spewing out oil?

FOr it to suddenly clear implies the turbo was not spinning

 

[Chang-kuao-lo]

Usually synthetic leaks worse. odd.

 

[mojoloco]

The only thing I can think of is that there are some different additives in this brand of oil that conditions the seals ????

Ran it all day yesterday and I dont have anymore oil coming out of the exhaust..
I mean it was pouring out of there!!!

I will monitor for the next few days to see if it will continue to get better..at least now it is drivable

Thanks

 

[lshobie]

Had the truck been sitting for a while? could have been water in the exhaust system. I had a BJ74 that sat for a couple of months, when I took it for a drive I thought I had blown something, huge whitish cloud down the highway that looked horrible - was just water burning off. Was fine after that and still works great. I didn't have oil coming out the tailpipe though.

 

[Stone]

The only thing I can think of is that there are some different additives in this brand of oil that conditions the seals ????

Thanks

The front and rear oil seals on the CT26 look like piston rings...it's not rubber like you are thinking of. So it wouldn't shrink or swell depending on the type of oil you're using.

Just noticed your sig line...out of curiousity, how high of a boost are you running?

 

[mojoloco]

Running between 10 to 15 psi...depends on the outside temp

Used cruiser today and running great...no more smoke or oil out the
tailpipe...

I use this truck as a daily driver so it doesn't sit for long

Thanks for all your help