Date: Tue, 29 Jun 2004 21:38:17 +1000 (EST) From: Craig's C900 Workshop <c900nospam.apana.org.au> Subject: Re: [Saab_c900] When was APC introduced in the Saab 900's?
On Wed, 23 Jun 2004, Grunff wrote: > Craig's C900 Workshop wrote: > > > Here in Sydney (Australia) the local service station has, as of this week, > > stopped selling lead-replacment petrol (aka LRP) and it's being phased out > > by most oil companies in Australia over the next 12 months. > > > > BP, who supplies the service station I prefer to use, is now selling it's > > newly-concocted 98 octane 'BP Ultimate' unleaded fuel out of the former > > LRP pump. Since it's 'unleaded' it looks like I will need to start using > > unleaded fuel additives in my two Saab 900's with B201 engines (1983 and > > 1985 builds). I know a few people who run older cars (not Saab's) on ULP > > and use additives for valve protection. > > Why? Why do the valves need protection? The alloy heads have steel valve > seats. That's what I thought, but since it was in the years when Australia (not sure about other countries) was transitioning from leaded to unleaded fuels, I figure it's better to check all this out first. 8-) > > If my 1983 900 has APC, it should run on higher-octane unleaded fuel > > without a problem. LRP is 95 octane here in Australia, and standard > > unleaded is around 93. Most of the newer high-tech fuel mixtures are 97 or > > higher. > > I run all of my 900s on 95 octane unleaded. I occasionally use 98 octane > on one of them (my fun T16). I'm not sure if regular unleaded is 95 octane here but I believe it is. The lead-replacement fuel is 97 and all of the premium unleaded fuels (like Shell Optimax, BP Ultimate, etc.) seem to be 98. > > What do others think? If the cars do have APC, are there any other things > > which can be affected apart from the valves by running B201 engines on > > unleaded fuels? > > Your valves won't be affected. The only cars you might get a slight > problem on are the 8v turbos. All the 16v turbos will be fine (APC). All > the non turbos will also be fine. Ok well this makes me feel a little better. My two C900's are non-turbo (1983 and 1985 builds). They both have auto transmissions too but one of my goals is to take the manual transmission out of my 1983 donor C900 and put it into my running 1983 C900 which is my main running vehicle because it's a 900S so it has lots of nice extras (except for the turbo). Craig. -- Craig's C900 Workshop - c900nospamon.nospam | Remember to Visit the Website - http://nospam/~c900 | remove 'poison' If you're a Saab C900 enthusiast, join our Yahoo 'saab_c900' group and/or join our mailing list at "http://nospam/mailman/listinfo/saab_c900"
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