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GraphiteDak
GenIII
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12/31/2006
11:51:17

Subject: Who would change their oil THIS way???!!
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Well with all the talk about which oil to use (almost provoking flaming) I began to chuckle remembering what my grandfather used to do.
He would change the oil on a normal basis. 3,000 miles. Synthetic wasn't really popular at the time, at least not to us, so we're just talking regular Castrol Oil.
As a teenager I would occasionally do the oil changes for him, but my grandfather would always make me do things HIS WAY.

Now who here would DARE do this?

1) Drain oil.
2) Put oil plug back in.
3) Fill crankcase with 1 gallon of DEISEL FUEL.
4) Start and let engine idle for 30 seconds.
5) Drain Deisel Fuel.
6) Put plug back in and refil with new oil.




No mechanic I knew at the time would think that was a good idea. However when he bought that 1978 Ford Econline Van with the 351W it had a zillion miles on it, and he rebuilt the engine when he bought it. He always changed the oil that way. He drove it on a daily basis and across country to Florida and NC a few times. Once with me on the trip. He drove it for about 7 to 8 yrs. Then my mom and dad bought the van from him and drove it for 6 yrs. It had a good 200k miles on it on THAT engine. The ONLY major repairs I did when my parents owned it was replace the intake because it sprung a water leak (not a common problem on these) and the timing chain jumped. Put another timing chain in it and it was still running when they sold it and for years I would see it driving around Payson after they sold it.

I was about 15 when my Grandfather first got that van and about 30 when my mom Sold it and it was driven daily. My Grandfather did the Deisel Fuel flush the entire 7-8 yrs that He drove it.


So. Who here would DARE flush their crankcase with Deisel? It sure would clean out the sludge!





Manny
Dodge Dakota
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12/31/2006
12:09:20

RE: Who would change their oil THIS way???!!
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Perhaps the diesel fuel was thick enough to provide a bit of lubrication, and solvent enough to get the gunk out?
When you did it "his way", do you remember if the diesel fuel drained as clean as it went in, or was it dirty-looking?



Josh
Dodge Dakota
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12/31/2006
12:27:41

RE: Who would change their oil THIS way???!!
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I once used a 50/50 mix of 5W-30 and Dexron/Mercon, to unsludge an old Nissan 4-banger.



stevedak
Dodge Dakota
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12/31/2006
12:58:02

RE: Who would change their oil THIS way???!!
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i once had to put diesel in my 4wheeler because it had water in the oil. i got it because driving in water too deep and after that the oil was milky colored. so we changed it multiple times but could never get the water completely out. so finally someone told us to put a quart of diesel in it and start it up for like 5-10 seconds and then shut it off and drain the diesel and fill back up with regular oil. it worked extremely good i was amazed!



.boB
Dodge Dakota
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12/31/2006
13:18:56

RE: Who would change their oil THIS way???!!
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Yes, that was popular "back in the day". I seem to remember my father doing the same thing.

Would I do it now? No way! With modern oils and fuels, there's just no need for it. Unless something unusual happens (like water in the crank case), I can't think any good reason to do it.



OBIO3
Dodge Dakota
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12/31/2006
16:34:19

RE: Who would change their oil THIS way???!!
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I'm 64. At the time the diesel flush was used, oil was not that great and sludged because of it plus there was no PCV valve,Just a draft pipe. I used to do it every oil change. I would use one quart of 40 or 50 weight oil and the balance diesel. I run it just over an idle for about 45 seconds. At idle there was very little oil pressure. Yes it came out black and yes it extended engine life a good deal. I would drain the diesel and put 30 Weight bulk in it running it one quart short to save on expence. The oil was cheap bulk. I run that for a few minutes, drined and installed good oil and changed the filter at this time. In those days when an engine hit 60,000 it was ready for rebuild. But with the diesel treatment I run 100,000 with no problems and still using no oil. When I started doing this I had bought a used 54 ford with 312 V8 . It only had 9,000 miles on it. I did this trick untill my first car with a PCV valve. Oil was getting better and engines could now do over 100,000 with regular oil changes with no problem.

So many problems .... So little time



GraphiteDak
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1/02/2007
16:00:05

RE: Who would change their oil THIS way???!!
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Great. There's some people older than me who remember that kind of a thing. SO maybe the old man wasn't so crazy after all!

Of course he did it EVERY change as preventive cleaning. I would think if you took an engine known to have a descent amount of sludge in it that did NOT get flushed regularly, and did this to loosen it up, it would be a ticking time bomb!



71firebird
Dodge Dakota
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1/03/2007
11:53:28

RE: Who would change their oil THIS way???!!
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That's a cool story! I imagine engines back in those days weren't built to close tolerences like today's. That may make a difference too.
An engine probably has 30 secs worth of oil still clinging to the block after a drain. My brother made a big mistake at a garage he used to work at, he drained the oil frm a Lincoln mark 8(I think) then got sidetracked with something else. he came back an hour or more later and forgot that he hadn't filled it back. He cranked it and put it in gear. He said it moved about 30 feet or so before it seized. I don't know how he kept from getting fired that day!



2cents
Dodge Dakota
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1/05/2007
10:31:36

RE: Who would change their oil THIS way???!!
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I remember my friends dad using kerosene to do the same thing, that was about 20 years ago. Kerosene and deisel are similar fuels so I guess that is the same thing as you grandfather.



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