Seems odd that Honda would care about past owners' MPG enough to retroactively change oil recommendations.

 

you can use 5w-20,, 5w-30,, it really it is no big deal...car will run good and for at least 300,000 miles assuming one takes care of it .. Heck i got cars that we service with over 300,000 on the engine using 10w-30 than 5w-30 and do not burn any oil or have any bearing wear ..

if you reside in a cooooold climate state,, use 5w-20 in the winter and 5w-30 in the summer
if you reside in a warm state ,, you can use 5w-30 all year around..
It will not do any damage to switch between the 2 ..

 

5W-30 keeps me ridin' dirty.

 

I gotta go look up some ancient fluids homework. I think I remember inhydrostatic bearing operation, the viscosity drops out of the lift calculation completely. It only remains in the drag term.

 

HAHAHA ..... come to think of it, I think I owe Chio a little research from the textbooks that I told him I'd look up when I was in Chicago!