Hey Greg,

I like to quantify things. So, I cannot let a statement like
"oil life monitor is essentially just set for an oil of the quality of
Mobil 1" go without trying to rationalize it.

If oil life monitor is a precise measurement of when service is
required, the difference in wear between 0W-40 and 0W-30 would be
significant enough that inaccuracy would be evident.

However, there is no way oil life monitor can account for variations
in temperature, variations in clearances between engine parts, etc etc.
So, engineers basically resort to the old "safety factor" which makes
"Time for Service" message appear when oil still is very usable. I'll
wager that even if user fills up with Mobil 1 (Saab) 0W-30 and only
changes oil when "Time for Service" message shows on SID, oil analysis
of spent oil will show plenty of useful life left in it.

If *I* were driving a 9-3SS, I would not exceed 10,000 drain interval
no matter what oil life monitor tells me because of all the safety factors
which the engineers must have built into their calculations.

thanks

Jae

posted by 68.49.4...

• Final word on oils, Bill S , Fri, 20 Dec 2002 13:34:40
  • Hey, I wished I'd posted this ---hahahaha, TG, Mon, 23 Dec 2002 17:24:41
  • Pragmatic answer from my dealer, Mike D, Mon, 23 Dec 2002 02:13:02
  • Re: Final word on oils, Bob T in Ct, Sun, 22 Dec 2002 02:24:38
  • No such thing as "final word on oils" on this BB n/m, DivrDon , Sat, 21 Dec 2002 17:09:50
  • Re: Amsoil to the rescue!!!, Mike, Sat, 21 Dec 2002 15:53:25
  • One word: PENNZOIL..., b.flippo, Fri, 20 Dec 2002 18:32:11
    • but Arnold Palmer swears by Quaker State n/m, Aero'ed, Sat, 21 Dec 2002 09:54:04
    • Finally, why spend more if don't have to? LOL n/m, Anders, Fri, 20 Dec 2002 18:52:32
  • them's fightin words! n/m, johnw, Fri, 20 Dec 2002 17:58:37
  • This assumes..., lowbar, Fri, 20 Dec 2002 17:06:09
    • Uh oh ... It seems I've caused ..., J, Fri, 20 Dec 2002 17:38:13
      • There once was a man with a shrink, Greg Netzner, Fri, 20 Dec 2002 19:23:03
      • Apolgy, Bill S , Fri, 20 Dec 2002 17:58:37
        • No worries ..., J, Fri, 20 Dec 2002 18:06:40
  • Do you think there is enough difference ..., J, Fri, 20 Dec 2002 16:23:11
    • 9-3SS is not all aluminum construction ---, Ian Glenday , Fri, 20 Dec 2002 18:56:44
    • all-aluminum construction means LESS friction and wear?, Aero'ed, Fri, 20 Dec 2002 17:46:00
      • Alright ... in my previous post, I misspoke ..., J, Fri, 20 Dec 2002 18:00:27
        • NINES Explains..., Stephen Goldberger, Fri, 20 Dec 2002 19:03:27
          • Re: NINES Explains..., Jason 0W-40, Sat, 21 Dec 2002 02:02:20
            • Dude ... do you EVER sleep?!? :-) n/m, J, Sat, 21 Dec 2002 02:05:19
              • will change my name to "Jason Insomniac" shortly-LOL-nm, Jason 0W-40, Sat, 21 Dec 2002 02:14:24
          • Is "Time for Service" indicator tuned for 0W-40 or ..., J, Fri, 20 Dec 2002 22:05:32
            • That's not the problem..., Stephen Goldberger, Sat, 21 Dec 2002 00:01:08
              • We're not letting you off that easily ..., J, Sun, 22 Dec 2002 15:51:00
                • Let's SEE just WHAT SAAB SAYS on this point, TG, Mon, 23 Dec 2002 17:39:56
                  • Thank you TG, although ..., J, Mon, 23 Dec 2002 22:29:15
                • Oil Monitor Parameters, Greg Netzner, Sun, 22 Dec 2002 19:54:51
                  • Thanks Greg ..., J, Sun, 22 Dec 2002 23:02:03
                    • More for J & Stephen, Greg Netzner, Mon, 23 Dec 2002 12:05:39
                      • I'll try to wrap this up and put a bow on it., J, Mon, 23 Dec 2002 15:26:05 <-- Viewing This Message
                        • The oil monitor spec is GM LL- A-025 for gas engines, TG, Mon, 23 Dec 2002 17:28:49
              • But I thought..., Greg Netzner, Sat, 21 Dec 2002 10:52:07
                • The Only Difference..., Stephen Goldberger, Sat, 21 Dec 2002 13:38:35
            • Man! You're just BEGGIN' for a fight!, Greg Netzner, Fri, 20 Dec 2002 23:28:00
  • Re: Final word on oils, Jason 0W-40, Fri, 20 Dec 2002 16:15:48
    • look @ mobil1.com I did, breeze, Fri, 20 Dec 2002 16:47:15
      • When I did it, it came up with wrong info, TG, Mon, 23 Dec 2002 17:23:06
      • You're talking to Mr. 0W-40! Mobil1.com specifies ..., J, Fri, 20 Dec 2002 17:00:34
  • I doubt it..., bRAD, Fri, 20 Dec 2002 14:08:55
    • Oh no, this will never be over, phred, Fri, 20 Dec 2002 14:17:27
      • Then again, if you have a C900..., Noel, Fri, 20 Dec 2002 15:09:41
        • Re: Then again, if you have a C900..., TG, Mon, 23 Dec 2002 17:30:48
        • That used to be the accepted wisdom, phred, Fri, 20 Dec 2002 16:44:08

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