RE: flushing oil

["Iain Atkinson" <iain.atkinson@virgin.net>]

Jim

The comma stuff is still available and this is what I was thinking of using,
I didn't change the oil when I did the lifters mainly because it was pretty
clean still. Cock up here???? It's due in about 1500 miles (1 month) so I
was going to do the flush then, I too have used the wynn's  stuff before the
last oil change, although it's difficult to tell if it did any good so I was
thinking of something a little more aggressive shall we say.


Iain

-----Original Message-----
From:	Jim Haseltine [mailto:Jim@Ur-q.freeserve.co.uk]
Sent:	22 November 1999 21:50
To:	Iain Atkinson
Subject:	Re: flushing oil

----- Original Message -----
From: Iain Atkinson <iain.atkinson@virgin.net>
> Whilst I had the cam out last week I noticed that the top end had a film
of
> old oily sludge type deposits over the parts that do not move. Now is
> wondering about the wisdom of using a flushing oil to try and remove these
> deposits. Anyone got any thoughts on this.

You just changed your oil when you did your lifters anyway didn't you.
Didn't you?
:-)

When I drove Rover V8's I used a flushing oil once every two oil changes. I
used a driveable flushing oil made by Comma, available back then from motor
factors - don't know if its still available.
The method was buy a couple of filters and 5 litres of flushing oil. Drain
oil, fit new filter and then fill with flushing oil. Use the car for a
maximum of 50 miles and then drain the oil, fit the other new filter and
fill with normal oil.
Really used to shift all the gunge, the V8 is a low pressure, high flow
engine so can suffer from sludge build up. Normal oil pressure was 28psi but
if you were sneaky (I am) you fitted a pressure relief spring from a MG
which would boost the pressure to around 50psi.

I can't use the drive and flush method in the Ur-q 'cos the oil would cook
in the turbo but I believe that Phil uses some sort of engine flush (Wynns
or something) for a few minutes before draining the oil. My Ur-q has been
run on either Mobil 1 or Quantum Gold since I got it and had no sludge when
I stripped the engine.

Jim.