I am not sure what you mean by "not affecting the oil level."  Ten Cent Life coolers and associated plumbing hold about 1/2 liter of oil.  I was advised when I bought mine to take that into account when draining and filling.  It takes that much extra oil over the factory spec to fill to a given level.  mcneely

---- Dan N <dn92610@GMAIL.COM> wrote:
> the oil cooler is connected via a Mocal sandwich adapter which has a temp
> controlled check valve in it. It supposed to open at certain temp. and not
> affecting the oil level.

--
David McNeely