Yes, the CV joints would be under maximum stress when you were climbing.
The extra effort by the engine that triggered the high speed fan was put
through the axles to the rear wheels.

Mark

Dave Mcneely wrote:
> Mark, thanks.  Would the CV joint/axle be more likely to knock under the conditions I experienced?  I was prepared to think it was an engine knock simply because of the conditions.  The knock did not recur at other times, and then reappeared when I climbed another steep grade.  I'll have everything checked when I get settled in at Spokane.  Meanwhile, I won't be driving the beast all that much, anyway.  As DeanB suggested, I'll switch to a synthetic oil, too.  After all, for one or two oil changes a year, the cost is trivial compared to tearing up an engine. If it makes a difference, it is cheap insurance.  mcneely
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