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Date: Sun, 03 Jul 2005 10:10:28 -0400
From: ma_twain <ma_twainnospamo.com>
Subject: Re: Oil Change Opinion


Malt_Hound wrote: > Pooh Bear wrote: > >> HSB wrote: >> >> >>> I suspect there has been a lot written on this topic, but the debate >>> in my >>> family has reached fevered pitch and I'm looking to this forum for a >>> deciding vote. I have a 1999 SAAB 9-3SE. Scheduled maintenance calls >>> for an >>> oil change every 10k miles. I don't live in a high sand/dust/useage >>> area and >>> think that if SAAB says every 10k for a change, that is good for me. I'm >>> getting various opinions including changing every 2k. What is your >>> opinion? >>> Is 10k OK??? >> >> >> >> You don't say where you're posting from. >> >> US drivers may be be more likely to use lousy plain mineral oil. That >> *will* >> require frequent changing if you love your engine. > > > ...and you know this to be true how? > > No, Graham, what you say is total BS. US drivers are *not* more likely > to use mineral oil on a car that specifies in the owners manual to use > full synthetic. Yes, there are bonehead penny pinchers on both sides of > the Atlantic that may try to get by on the cheap, but please refrain > from generalizing about things in the US since you quite obviously don't > have any real experience here. > >> >> If you're using synthetic, the service interval is perfectly fine. I >> trust >> you're not a sad bastard who uses the car to do 400 metre trips rather >> than >> waliking ? That makes a big difference -esp to the engines with the >> 'breather >> problem'.. >> > > No, once again you are wrong. Wrong as could be. 10,000 miles is only > an appropriate change interval if all you ever drive is highway miles. > But under stop and go, short trips or any of the other myriad of reasons > that would qualify as "severe duty" the change intervals are reduced > greatly. > > This engine has a small crankcase capacity. Only a bit more than 4 US > quarts as I recall. It is cheap insurance to long engine life to change > the oil with full synthetic at 5k mile intervals *unless* you are using > the car for long highway trips exclusively. > >> Graham >> >> >> btw - stuff posted here suggests that *oil filter* changes on a >> slightly more >> regular basis will actually make the oil itself perform better ! >> >> Seeing that a filter costs next to nothing.... you may wish to change >> that at >> 5km intervals and simply top-up the oil. > > > The filter costs ~ 5 bucks and you'll have to replace almost a quart of > oil. I can buy Mobil 1 fully synthetic oil for $4 a quart. I would not > waste my time and money replacing just the filter and adding new oil to > old just to save $12. Do the whole oil change for ~ $21-25 every 5k > miles or so and you will never be plagued by engine sludge woes. > > -Fred W Not just Saab turbos. I still drive a 1982 245 with a turbo. It gets a new Volvo filter and Mobil1 every 5,000 miles. My 1993 C900 turbo gets the same treatment - I want to keep on the road for another 15 years or more.

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