Date: Sun, 12 Jun 2005 03:09:53 +0100
From: Pooh Bear <rabbitsfriendsandrelationsnospamail.com>
Subject: Re: Oil for Saab 99 -84


Craig's Saab C900 Site wrote: > "jb" <jsmith1456nospamo.com> writes: > > >"Mikael Johansson" <adentnospamakan.hig.se> wrote in message > >news:Pine.GSO.4.56.0506111507580.27507nospaminal.astrakan.hig.se... > >> Hello! > >> > >> I wonder how much oil it's supposed to be in a saab 99 from -84 and what > >> kind it should be? (liters) > >> > >> WFR: Mikael J > > >hi 3.7 litres (including filter). > > >I always ran a good 15/40 mineral oil in the UK..Or maybe 10/30 in colder > >climes. > > Another related point - what do those numbers mean? One is the viscosity I > think, but I'm not sure what the other one is. As I understand it it's the viscosity cold and hot. You want low viscosity cold so that the oil gets round the engine and all the bearings fast. When hot you don't want the oil to 'thin' too much. The numbers relate to the SAE method of calculating viscosoity IIRC. So you want a low number followed by a higher number. I have to admit I'm no expert. One thing that does puzzle me is the wide variety of grades of Mobil One. I'm sure there's one that's 0W/60. More routinely 5/50, 10/40 ? Never previously seen zero in an oil spec like that. Which one to use ? Graham

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