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Author Topic: Oil flush  (Read 4213 times)

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Kevin Wood

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Re: Oil flush
« Reply #45 on: 31 March 2010, 16:57:52 »
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im sorry but diesel does have lubracating properties, ever tried driving round a roundabout with a diesel spill on it???

and yes the advice referes to putting diesel fuel in the engine and running it for 5/10 mins (standing dont load it), been using this meathod on many a transit dti and real tractors for many years to clean out a stinking eninge and none of them have gone bang.

whether is a good idea on a bmw td engine thought i cant say having never done it on one.

Diesel is too thin to build up a protective layer on the bearings, in fact the oil pump on a car engine will probably not even pump it adequately, leaving most of the engine without any lubrication. It's not something to which I would subject any engine I own, put it that way, and that includes my lawn mower. ;)

Kevin
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pembsomega

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Re: Oil flush
« Reply #46 on: 31 March 2010, 17:08:38 »
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Quote
im sorry but diesel does have lubracating properties, ever tried driving round a roundabout with a diesel spill on it???

and yes the advice referes to putting diesel fuel in the engine and running it for 5/10 mins (standing dont load it), been using this meathod on many a transit dti and real tractors for many years to clean out a stinking eninge and none of them have gone bang.

whether is a good idea on a bmw td engine thought i cant say having never done it on one.

Diesel is too thin to build up a protective layer on the bearings, in fact the oil pump on a car engine will probably not even pump it adequately, leaving most of the engine without any lubrication. It's not something to which I would subject any engine I own, put it that way, and that includes my lawn mower. ;)

Kevin

Ah but the old oil has surely 'built up' a protective layer already? your just cleaning the gunk out under no load for a couple of mins, but then like i said ive only done it on tractors and transists.  and dtis for tranists are ten a penny....

im guessing an oil flush debate could be as tendious as a 'what oil should i put in my car' thread
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TheBoy

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Re: Oil flush
« Reply #47 on: 31 March 2010, 17:21:37 »
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That would be perfect TheBoy, im actually going home tomorrow so if you had some oil already id be very happy to stop by, if you dont have the full 20L then that would be fine, just need enough to do one change and then i could get some more at a later date, i will get around to getting the card over easter after ive asked my local dealer/stealer if they will accept the car, whats the chance that im gonna be one of the unlucky ones  ;D
Marks DTM is probably less out of your way, but I have 4 x 5l here (or more if you want it!).  I'm not around until 6pm tomorrow (thurs), but could leave it with Tunnie if he is around tomorrow?
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Kevin Wood

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Re: Oil flush
« Reply #48 on: 31 March 2010, 19:03:35 »
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im guessing an oil flush debate could be as tendious as a 'what oil should i put in my car' thread

Oh, let's not go there. ;D ;D ;D

Kevin
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Seth

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Re: Oil flush
« Reply #49 on: 31 March 2010, 19:14:32 »
NEVER EVER put neat diesel fuel into ANY engine as a flushing agent.

Take my word for it - you'll not only wash all the crud into blocking the pick-up strainer, you can literally 'wash-out' the bearings too.
I've seen what can happen - believe me :'(

Best to do frequent oil-changes :y
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Marks DTM Calib

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Re: Oil flush
« Reply #50 on: 31 March 2010, 19:19:00 »
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NEVER EVER put neat diesel fuel into ANY engine as a flushing agent.

Take my word for it - you'll not only wash all the crud into blocking the pick-up strainer, you can literally 'wash-out' the bearings too.
I've seen what can happen - believe me :'(

Best to do frequent oil-changes :y

I have a Mclaren diesel engine which is living proof of that.....it died due to a falied injector which resulted in diesel in the sump...the result is a goosed crank and buggered shells!
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Seth

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Re: Oil flush
« Reply #51 on: 31 March 2010, 19:25:39 »
Quote
Quote
NEVER EVER put neat diesel fuel into ANY engine as a flushing agent.

Take my word for it - you'll not only wash all the crud into blocking the pick-up strainer, you can literally 'wash-out' the bearings too.
I've seen what can happen - believe me :'(

Best to do frequent oil-changes :y

I have a Mclaren diesel engine which is living proof of that.....it died due to a falied injector which resulted in diesel in the sump...the result is a goosed crank and buggered shells!

That's right Mark - I've seen what happened to Leyland 0.400/0.600/0.680s when we had a failure of the leak-off galleries, which were enclosed within the rocker-covers. Everything goosed within - literally!
 >:(

Much preferred AEC's idea with 'exposed' injectors and leak-offs.
 :y
« Last Edit: 31 March 2010, 19:26:45 by Reliance505 »
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pembsomega

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Re: Oil flush
« Reply #52 on: 01 April 2010, 11:08:21 »


surely these problems come from running an enigine with diesl in is for a period of time un noticed?

and the one with the injector that died, that would surely flood the compression chamber with fuel and that would goose you rod and rings etc anyway......

when servicing an old transit or tractor the meathod used is warm up, drain oil. fill with 50/50 mixture of oil and diesel. run under no load for 10 mins, drain. change filter fill again with oil. change after 500 miles

ive done this at least 40 - 50 times on various tractors and transits over many years and  never had an issue.



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