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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!wupost!gumby!destroyer!ncar!uchinews!news
- From: frank@endeavor (& Esquivel)
- Subject: Re: Dirty oil after change?
- Message-ID: <1992Sep11.151748.20915@midway.uchicago.edu>
- Sender: news@uchinews.uchicago.edu (News System)
- Organization: University of Chicago Computing Organizations
- References: <146@bluehau.bubble.org>
- Date: Fri, 11 Sep 1992 15:17:48 GMT
- Lines: 49
-
- In article <146@bluehau.bubble.org> hugo@bluehau.bubble.org (Hugo Bueno)
- writes:
- > sgm@otter.hpl.hp.com (Steve Methley) says:
- > ]neilw@informix.com (Neil Williams) in
- <1992Sep7.173024.14772@informix.com>:
- > ]
- > ]> My SO recently had her oil changed at a local gas station. When I
- went
- > ]> with her to pick up her car, I took a look at the dipstick.
- > ]> I was very surprised to see that the oil still looked pretty
- dirty....
- > ]> .. but I know that my oil looks clear and brand-new after a change...
- > ]> ..for service not performed, or they didn't change the filter...
- > ]
- > ]Well, I do my own oil changes on three cars and each time the oil is
- clear for
- > ]weeks/months afterwards. I do use a flushing oil every other change
- (not
- > ]additive, real flushing oil) on the two with hydraulic tappets however,
- but the
- > ]other is just as clean. The cars are all high mileage, one is >120k
- miles.
- > ]
- > ]I'd be wondering whether they didn't change the filter too.... Try
- smelling
- > ]the oil ! Used oil has a very distinctive 'burnt' odour compared to
- new oil
- > ]IMHO, due to dissolved carbon and petrol.
- >
- > As a counter-data point, and one which I venture to guess
- > is much closer to reality.....
- >
- > I've done countless oil changes on cars and I have YET to see
- > one that has clear oil after the change. This even includes
- > changing the filter and using engine flushes.
- >
- > --
- > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- > Hugo Bueno |Delphi : MRGOOD CIS: 71211,3662
- > Fanwood, NJ |Internet: hugo@bluehau.bubble.org
- > CoCo 3 UUCP |UUCP : ...!s4mjs!bluehau!hugo
-
- Considering that the oils job is to clean as much as lubricate I would
- take the dirty oil as a good sign. I use Mobil 1 synthetic oil and that
- only stays clear for a day or two after an oil change. I say don't worry
- about it. Just make sure you get it changed regularly and you have nothing
- to worry about.
-
- Frank
-