>James Slayden wrote: > > > Hrmm, I don't seem to get around to it until ~8,000 miles or so. Seems > > fine so far and I have 90K on my engine. > > > > James Slayden > > >I have changed the oil in my 1991 chevrolet corsica every three thousand >miles since new. Currently the car has >306,000 miles and still runs like new. >Dave
Thanks for all the replies, folks, but has anyone read the thing? > >To download the latest version, please go to > > > >http://TheMotorOilSite.com and register for an account. I don't think there's any particular hassle or peril in registering. (Just kill the cookies afterwards, as ever.) I guess regular 3,000-mile oil changes surely won't do the motor any harm. Kirk, your friend's 60,000 miles (without checks?) probably got her the predictable results. I think you have a good point about the additives expiring. Which additives, I wonder? Robert, thanks for the info about the RR Merlins (5,000 hp!!!) and the 12-cyl Jags. You also say the computers and stronger sparks (for spark-ignition) are kinder to the engines, but newer engines run hotter than the old-fangled ones of 25 years ago or so did. "As demands of fuel economy and federal emission standards began to affect auto manufacturers, they had to make smaller, harder-working engines that operated at higher temperatures than the older engines, especially with the introduction of catalytic-converter systems in the mid-1970s. Subsequently, motor oil sometimes flashed in the crankcases of vehicles, and in the early 1980s, an anti-flashing agent was added to motor oils for safety reasons. This raised the oil's combustion temperature significantly." (Not from the Motor Oil Bible.) Is that right? If so I don't know how relevant the example of the 12-cyl Jags might be. Seems to me it'd be worthwhile trying to get a handle on this. The Motor Oil Bible author sees a large-scale and widespread waste of fossil fuel in the 3,000-mile requirement. If that's the case, it perhaps behooves us to take it onboard and act accordingly. Cheap and available oil analysis would make life easier, but changing the oil according to the analysis would perhaps save a lot of oil (as per James's 8,000 miles), even if oil changes are cheaper. Quite a lot of people are prepared to pay more for biodiesel for similar reasons. Sean Ihndris posted this at the vegoil-diesel list the other day: >My interest in vegi-fuel led me to serch for vegi motor oil, this is >what I found: > > www.sterlinggrade.com > > www.renewablelube.com > >Seancrete. Any reports on these oils? If it were feasible to change oil every 25,000 miles or whatever and use this stuff, that would be progress, IMHO. Best Keith ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada. http://www.c1tracking.com/l.asp?cid=5511 http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://infoarchive.net/sgroup/biofuel/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/biofuel/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
