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wilber1

Abbotsford B.C.

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Posted: 01/17/21 08:05pm Link  |  Quote  |  Print  |  Notify Moderator

Dufus wrote:

I had a transmission modulator valves go south and fill the crankcase with transmission fluid.


Interesting, what vehicle?


"Never trust a man who has not a single redeeming vice" WSC

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Grit dog

Black Diamond, WA

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Posted: 01/17/21 08:41pm Link  |  Quote  |  Print  |  Notify Moderator

Dufus wrote:

I had a transmission modulator valves go south and fill the crankcase with transmission fluid.

Technically this is possible, but you’d have to drive a while with the engine running like ____, exhaust smoking from the atf ingestion and a poorly shifting trans to put a bunch of atf in the crank case.


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
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MARKW8

Akron OH

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Posted: 01/17/21 09:31pm Link  |  Quote  |  Print  |  Notify Moderator

I had an 08 Duramax with 140k on it when I traded it. I always joked about it making oil. I never, ever had to add anything. I had 4 oil samples done by Blackstone and fuel contamination was never a problem.
Mark

CharlesinGA

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Posted: 01/17/21 09:35pm Link  |  Quote  |  Print  |  Notify Moderator

Mercedes does not like Bio diesel because it contaminates the oil and causes cylinder wash down. They specifically tell you to keep a close eye on the oil level if you constantly run Bio and if it rises, change the oil.

Charles


'03 Ram 2500 CTD, 5.9HO six speed std cab long bed Leer top and 2008 Bigfoot 25B21RB.. previously 2008 Thor/Dutchman Freedom Spirit 180. SOLD - 2007 Winnebago View 23H Motorhome.

deltabravo

Spokane, WA

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Posted: 01/18/21 05:28am Link  |  Quote  |  Print  |  Notify Moderator

miltvill wrote:

I had the same issue with my 2008 Chevy 2500 Duramax. This was a well documented issue at the time. During regen fuel is injected into the piston during the exhaust cycle which which pushes unburned fuel through the exhaust system into the DPF where it burns the diesel particles. Some fuel would find its way back into the oil.


This was the LMM Duramax - 2007.5-2010 model years

miltvill wrote:

The problem was corrected in later years by injecting fuel into the manifold during Regen.


This was the LML Duramax, 2010-2016. It has the DEF system.


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deltabravo

Spokane, WA

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Posted: 01/18/21 05:30am Link  |  Quote  |  Print  |  Notify Moderator

MARKW8 wrote:

I had an 08 Duramax with 140k on it when I traded it. I always joked about it making oil.


My 2009 has just under 70k miles and I've never added oil to mine either.

JIMNLIN

Oklahoma

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Posted: 01/18/21 06:12am Link  |  Quote  |  Print  |  Notify Moderator

Dufus wrote:

I had a transmission modulator valves go south and fill the crankcase with transmission fluid.

That brought back long gone memories.
BTDT....along with ruined spark plugs.
Very typical of our older gen auto trannies as just about all of them had the valve.
Tell tale was a puff of blue smoke on start up which many just ignored for various reasons, till fluids came out the engine oil dip stick tube.


"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers

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JRscooby

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Posted: 01/18/21 07:47am Link  |  Quote  |  Print  |  Notify Moderator

JIMNLIN wrote:

Dufus wrote:

I had a transmission modulator valves go south and fill the crankcase with transmission fluid.

That brought back long gone memories.
BTDT....along with ruined spark plugs.
Very typical of our older gen auto trannies as just about all of them had the valve.
Tell tale was a puff of blue smoke on start up which many just ignored for various reasons, till fluids came out the engine oil dip stick tube.


Most times you would burn or smoke the trans fluid. Or the cooler leak fluid into the radiator. For years gas in the oil would be the first indication the fuel pump was going out.

Story I heard after Dad passed; He was fed up with the neighbors bragging about their great gas mileage. He bought Mom a Chevitte. Then once a month he would stick a hose in the tank, MT 5 gal can into is van. Took about 3 months before one asked him why. "If I don't drain some out once in awhile it will run over!"

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