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I have a 2000 S with 38K mi. that has never leaked. It uses none of the 10w40 specified in the owners manual between changes. It's getting a prophylactic LN Engineering IMS Kit next week with water pump, cool thermostat and belt, and Air/Oil separator. Again it would be interesting to know how many seal failures are with 0w and 5w oil usage and how many bearing failures occurred with those oils and/or change intervals over 5000 mi. Yes, it's a weak bearing, but if you're going to gamble by continuing with it, use more viscosity in conjunction with higher (older) ZDDP content. All of the "exotic" oils contain higher levels.
The ZDDP won't trash your cats if you are burning very little oil.
Last edited by Manfred; 10-26-2012 at 08:21 AM.
Reason: Update: Bearing was visibly OK
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