We can still get the 15/50 Mobil 1 at Wally World up here in IA, but
haven't checked the price lately, but last I looike3d it was still in
the $22-25 range for the big jug..  I change oil once in the spring
and once in the fall and I haven't exceeded the mileage numbers yet
due to the price of gas.  I've switched to the Castrol Hi
Mileage  10/40 oil and the Mobil 1 filter as per Dennis' research
report he found(for filters anyway).  What's been hard to find is the
thicker straight weight oils.  My Boston Bob motor has 130k on it and
is approaching its 10 year anniversary.  No HG leaks yet, but
compression is slipping and oil leaks preclude expensive oil in the
crankcase.  Oil pressure is still well above the 10#/1k rpm number however.

DM&FS

At 10:26 PM 3/4/2011, John Rodgers wrote:
>  Yes, running these machines in really hot climes requires that higher
>number oil. Down here in the Deep South that heat in summer is a
>problem. I have been running Mobil 1 15W50 for several years but as of
>late it has gotten hard to come by. First Walmart stopped carrying it,
>and now it has gotten really "iffy" at the FLAPS in the area - plus the
>price has gone up quite a bit. Four quarts is now like $32 plus bucks!!
>But the difficult-to-find routine is the capper. I started considering a
>change to another oil type/brand for my next oil change shortly and this
>discussion is therefore fortuitous for me.
>
>John
>
>John Rodgers
>Clayartist and Moldmaker
>88'GL VW Bus Driver
>Chelsea, AL
>Http://www.moldhaus.com
>
>
>