Mobil 1, A 1 in quality.

Synthetic fills in Pits and scratches , Plus it puts a friction protective
coating on all moving parts in your Engine , rear end and transmission .
There are big ways to tell . Watch engine Temp. , more power under load ,
faster start ups in cold conditions and longer engine life.

Seen Live at USAir at PIT. HEAVY MAINTENANCE a test by a oil MFG. This
machine had a Piece of Hard Chrome Plated landing Gear shaft in a fixture
that spun at 400 rpm a slide fixture had a piece of bearing Bronze in it.
The guy pushed the side into the shaft running , he poured different oils on
it , all the plan Jane oils burn and smoked big time. With the shaft hot he
poured some Synthetic on this hot boy. The rpm on the machine came back to
400 ,the heat went away. This was back in 1989. I use a MT 10 in all the
bearings when assembling Airmark Buffers. IT has put our tools at a new
level addressing longevity .

SO indeed yes to Synthetic ,

Jim Weston