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You should be using ACEA A3 rated oil. This requires at least a synthetic blend, and most ACEA A3 oils are XW-40 or above, although there are some 5W30 or 10W30 oils which also meat ACEA A3(including Amsoil 5W30 heavy duty diesel oil). A3 requires that oil "stay in grade" after a shear test, which takes care of the worry about excess viscosity modifiers. There are no standards for what constitutes "synthetic blend", so while the ACEA A3 rating is comforting, fully synthetic rather than synthetic blend is also a good plan.

Mobil 1 0W40 is relatively unique in meeting both ACEA A3 and ILSAC GF (fuel saving) requirements. Amsoil is a very fine product, and Amsoil and Mobil 1 are the most widely known using Group IV (PAO, or poly alpha olefin)base oils. Most "synthetics" use Group III base oil, which is highly processed petroleum. RedLine is Group V (anything that isn't in groups I - IV; in the case of RedLine, it's polyol ester base oil, which is also used for aircraft gas turbine lubricants). It's easy to get hung up on the individual components, but in the words of a Shell engineer, it's the performance and consistency of the final result which counts, not the components.

There are some 5W-40 synthetics on the market, notably Valvoline and Shell, and Castrol sells a 5W50, 10W40, and 10W30 full synthetics.

posted by 24.166.10...

http://www.saabclub.com

• Oil Wars, Episode 2, Attack of the Synthetics., KB88900T, Thu, 6 Feb 2003 19:22:29
  • Read NINES!!!, Stephen Goldberger, Sat, 8 Feb 2003 15:46:38 <-- Viewing This Message
  • Die! Die you oil-sucking heathens!, Greg Netzner, Fri, 7 Feb 2003 15:00:22
    • You suffer from "friday syndrome" too?, Eric Law, Fri, 7 Feb 2003 16:02:51
      • Friday pm= Mental Sapphire/Tonic/Dirty/Extra Olive n/m, Jon in Chicago, Fri, 7 Feb 2003 17:01:31
      • Yes, unfortunately ... five days a week ... ;-) . (n/m), Greg Netzner, Fri, 7 Feb 2003 16:43:45
  • Wrong ideas., Dick in Falls Church, Thu, 6 Feb 2003 20:26:00
    • I'm with you Dick, Amsoil 0W30 and SDF57..., VictorVector, Sun, 9 Feb 2003 22:55:18
    • Re: Wrong ideas., DVS, Fri, 7 Feb 2003 09:24:08
      • Cold starts., Dick in Falls Church, Fri, 7 Feb 2003 12:02:28
    • I'm with Dick, Viggen2, Thu, 6 Feb 2003 21:10:29
      • That's amazing gas savings! n/m. Best, KB88900T, Thu, 6 Feb 2003 22:06:14
        • Yes, but ..., Greg Netzner, Fri, 7 Feb 2003 16:51:12
  • Don't worry so much about the low number., J, Thu, 6 Feb 2003 19:56:06
    • That's interesting. n/m. Thanks, KB88900T, Thu, 6 Feb 2003 20:04:30
  • Episode 2?!? Where have you been?, J, Thu, 6 Feb 2003 19:43:57
    • I havn't done much research on oil. I just enjoy, KB88900T, Thu, 6 Feb 2003 19:59:50
      • For me Mobil 1 works well....., REM in Seattle, Fri, 7 Feb 2003 09:57:43
      • I have a 9-5 2.3 LPT. So, I just go with ..., J, Thu, 6 Feb 2003 21:03:48

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