Mobil 1 oil weight

[john at westcoastgarage.net]

Nice rant!  You said:   "Both 10w30 and 15w40/50 are too thick. run either 
5W-30 or 0W40. If your oil stays below 100 degC, all of those oils are TOO 
THICK, if
you do a flow test."  .......SNIP ........

But ya missed the boat here.  Unlike your Biturbo, Ameer's car is "old 
technology"  with substantially larger oil passages and clearances, and 
should be running 15w40 in the warmer months.  In fact, Now's about the time 
to go there, and the season should last until his next oil change, assuming 
he doesn't go more than around 7500 miles before late fall/winter.

John