T&T: Multi Grade Oil in Lehman Engines

[A H FOSTER]

From: Mike Maurice <mikem at yachtsdelivered.com>
Subject: T&T: Multi Grade Oil in Lehman Engines

>snip<

However, I am suspicious that if an engine is accidentally over heated
due to the internal water pump failing without warning, that some
engines that have seized up would not have if they had been running a
single weight oil.

>snip<
 
How would a single weight oil keep the pistons from swelling up in an over
heated engine any better than a multi-weight oil?
 
                                                                             
              Capt. Bill