Date: Wed, 27 Oct 2004 06:07:58 +0100 From: Pooh Bear <rabbitsfriendsandrelationsnospamail.com> Subject: Re: Synth Oil Chg Interval on a Viggen?
WitchDr wrote: > I have a '00 Viggen with 30k that I've been changing every 3k with > non-synthetic Castrol but I've been thinking of converting over to Mobil 1 > synthetic. What is a good oil change interval with a pure synthetic like > Mobile 1? Why oh why are you using non synthetic oil in a Saab engine ? Saab *specify* the use of synthetic oils ( both semi and full ). Synthetics have a far better 'lifetime'. I hear that this 'old fashioned' approach to lubrication is rife in the USA where you have many 'lube shops'. Not that there's anything wrong with regular oil changes - it's just not necessary with modern oils. Consider your driving. If it's mainly short runs, change the oil more often. If it's long runs then the oil isn't likely to be contaminated by dirty by-products so much. I would have no problem with 12k miles on synth on regular long runs. Graham