Re: engine oil additives

On Sat, 27 Nov 2004 11:33:24 +0000, Mr.Nice.
<mr.nice@*nospam*clara.co.uk> wrote:

>when I change the engine oil on the wifes saab, when checking the
>level on the dipstick the oil is new-oil coloured. when doing the same
>on my land rover it's black like the old oil, a little disappointing,
>would using some engine flush help get more of the old oil out and
>thus be better for my engine at oil-change time? and may it do any
>harm to an old high-milage engine?

I was under the impression that diesel engines always turned the oil
dirty whereas petrol ones dont. Cant remember exactly why but i once
read a good argument for it.
My landy turns the oild black pretty quick (took about 2 or 3 trips
when i rebuilt it to turn it black again). The v8 in my 101 keeps the
oil nice and clean looking.

On or around Sat, 27 Nov 2004 14:50:47 +0000, Tom Woods
<[email protected]> enlightened us thusly:

>I was under the impression that diesel engines always turned the oil
>dirty whereas petrol ones dont. Cant remember exactly why but i once
>read a good argument for it.
>My landy turns the oild black pretty quick (took about 2 or 3 trips
>when i rebuilt it to turn it black again). The v8 in my 101 keeps the
>oil nice and clean looking.

diesels make the oil black quite quickly, but that's dues to soot in it.
Petrols take longer to do this. However, they both wear the oil out. 's
disappointing, though, when you pull the dipstick out of something you
changed the oil on a week ago, and it's black as the ace.

"Tom Woods" <[email protected]> wrote in message
news:[email protected]...
> On Sat, 27 Nov 2004 11:33:24 +0000, Mr.Nice.
> <mr.nice@*nospam*clara.co.uk> wrote:
>
> >when I change the engine oil on the wifes saab, when checking the
> >level on the dipstick the oil is new-oil coloured. when doing the same
> >on my land rover it's black like the old oil, a little disappointing,
> >would using some engine flush help get more of the old oil out and
> >thus be better for my engine at oil-change time? and may it do any
> >harm to an old high-milage engine?
>
> I was under the impression that diesel engines always turned the oil
> dirty whereas petrol ones dont. Cant remember exactly why but i once
> read a good argument for it.
> My landy turns the oild black pretty quick (took about 2 or 3 trips
> when i rebuilt it to turn it black again). The v8 in my 101 keeps the
> oil nice and clean looking.

The oil in my engine is still a nice golden colour.. i've been thinking of
taking the van back to the place that re-built the engine and complaining

(it's a 2.8 TDI fiat engine in my Iveco motorhome, was totaly re-conditioned
when it ate an exhaust valve at 70mph 2 weeks after buying the van.. that
was a year and a half ago now, done about 10k miles since, and changed the
oil once.. last change was 5 months/3k miles ago.. still golden and like
new)