Found a Moly Engine! 97-up Subaru EJ22

Status
Not open for further replies.
Joined
Jun 10, 2010
Messages
1,231
Location
Duval Co. Jax FL, USA
This from Wikipedia, about the use of Moly By the MANUFACTURER straight from the assembly plant. In this case regarding the Subaru EJ22:

EJ22 Enhancements and Improvements
Beginning in the 1997 Model Year, the 2.2 liter engine for 1997 Legacy and Impreza models has had internal and external changes that yield an approximately 10% increase in power and 3% increase in fuel economy.

Accomplishing this involves many factors, one of which is engine friction reduction. The piston, a major source of engine friction, has been coated with a friction reducing agent called Molybdenum. This thin coating not only allows smoother travel through the cylinder, but also reduces cylinder wall scuffing.


To me, this brings up the whole "Mos2" vs Schaeffers 132 Moly debate again. Ive never figured out how INSoluble Moly (Mos2) can benefit!

btw, the one can that provided funky-looking Oil, the next Oil batch looked fine when changed. Seems that Moly had nowhere to go, and i was lucky. That, too, should indicate good engine, yes?


http://en.wikipedia.org/wiki/Subaru_EJ_engine
 
In part this is used as a replacement for ZDDP to help prevent piston scuffing. I believe it actually started in the racing area to reduce friction, increasing power. As stated many pistons now are moly coated on the thrust skirts.
 
The 2.5L Mazda MZR engine has molybdenum alloyed into the iron cylinder liners. Moly coated piston skirts have been doing for quite a while. Moly is the good stuff!!
 
Status
Not open for further replies.
Back
Top Bottom