i change religiously at 3k or less. i was trying 15w-40 delvac 1300 over the winter hoping to help clean the engine when it happened. i'm wondering if that had anything to do with it. i even gave it a dose of auto-rx (there's a thread somewhere on the forum). i switched to 10w-40 castrol again. will a thicker oil help? the lifter is ok once i have gotten it going and the problem does not start again unless i leave it for several days.
1993 300e-2.8 - gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"