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Date: 8 Jul 2005 14:12:16 -0700
From: smaartaassaabrnospaml.com (SmaartAasSaabr)
Subject: Re: Oil Change Opinion


If you want to do the 10k mile interval you must use a synthetic, like Saab Turbo Oil or Mobil 1 (my personal favorite) However, there is much popularity of 9-5's and 9-3's coming in with seized motors or other problems relating to oil sludging. This is wide throughout the auto industry today. Toyota is having even more trouble on their motors, sludging is an automotive black plague of the 21st century. Why? Likely a mix of under-spec oils, and most importantly, overly optimistic oil change intervals that are only suitable in "perfect conditions". Which don't exist. What I would do on your 9-5 is change the oil approximately every 7 500miles, to maybe 8 500 tops, and use a synthetic like Mobil 1 or equivalent (though I would NOT use Castrol Syntec). If I noticed "black" oil, change it immediately. This should keep your motor trouble free. However, people that change their oil (even crap oil) at 3 000 miles always have beautiful nice clean engines when the car is junked, usually due to the car rusting away. So it is your choice. How long do you want to have her on the road? More money now, or more money later. Pooh Bear <rabbitsfriendsandrelationsnospamail.com> wrote in message news:<42CDF070.E764A500nospamail.com>... > Malt_Hound wrote: > > > Pooh Bear wrote: > > > > > 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? > > People posting here for one thing ! > > > > 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. > > So what exactly is " quality motor oil " ? > > http://jiffylube.com/AutoServices/srv_SignatureServiceOilChange.aspx?WSCID=1 > > Are you saying that Jiffy Lube will use synthetic if you bring them a Saab ? > > > 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. > > So.... Why is it that there is this constant debate on the topic ? I've not heard a > single european poster claim that oil changes above recommended service interval are > *needed* when using synthetic oil. > > You might care to 'treat' your car to more frequent intervals sure - no trouble with > that. > > > > 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. > > Once again this so-called 'stop-go' thing seems to be a US phenomenon. > > > This engine has a small crankcase capacity. Only a bit more than 4 US > > quarts as I recall. > > God Almighty - US quarts ! We're in the 21st century now. Care to talk litres ? > > > > 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. > > There's nothing *wrong* with changing oil more frequently if you like. I was > interested to see if the idea of regular filter changing had some support. It makes > some sense technically. My total cost of a oil and filter change vs filter only is > very different to the figures you mention. > > Graham

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