Date: Thu, 09 Mar 2000 11:29:14 +0100
From: Robert Brown <>
Subject: Re: 900 Turbo oil consumption

Hi Michael, You might be better off to put this question directly to Saab in Australia (or wait for an Australian reply to this NG), because, as you say, conditions in that part of the world are like no other. I lived in the ACT and in Sydney 9 years and heard stories about Saab having to put in extra oil coolers for engine and/or transmission oil to compensate for the local (read very hot) conditions. What state do you live in? As you say, very few people down there would be caught dead putting anything thinner than 20w50 in their engine. What were you using before you switched? The only risk I can see is if you park it up in Thredbo in June-August, you might get bad oil flow in the turbo bearings. But the best best is to ask at least three experienced Saab mechanics and see what they think. Post us the result when you get it OK? Regards, Robert Michael Rochfort wrote: > What would be an acceptable level of oil consumption for an '83 900 Turbo? > > Mine has about 175,000km (110,000 miles) on the clock. The car has had a > history (now solved) of overheating. The head gasket has been recently > replaced, at which time the mechanic (a trusted relative) said that the > bores and pistons seemed to show little wear. No oil is visible in the > coolant or vice versa. There are no leaks to speak of. There seems to be no > smoke, except a small amount occasionally after a long idle. This clears > once underway again. > > One other perhaps related symptom is that the oil pressure warning comes on > momentarily with a heavy application of the brakes. I have seen this problem > before on my old 99. It was fixed by replacing the oil pressure switch. > > As a secondary question, what grade of oil is recommended for this car? My > owner's manual says 10 w 30, 10 w 40 or 5 w 50. These seem much too thin to > me. The oil on sale here in Australia (tropical in summer, never snows or > freezes in winter) are all 25 w 50 or so, and it is nearly impossible to > find any of the advised grades. I ask because the oil consumption has been > noticably higher since I changed to the thinnest oil I could find (15 w 40), > and the oil light problem has become more frequent as well. The car has used > a litre (quart?) of oil in the last 2000 miles. > > Thanks in advance for any replies. > -- > > Michael Rochfort > > To reply remove "nospam" from email address

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