my 310 is one that has no factory oil cooler just the add on to the filter housing , ive read on here from guys the turbo heat & oil cap. was the big problem on these 310's so im thinking of adding some kind of cooler like oliver used to cool hyd. & hydraul shift on the front of the rad. what do you guys think about running the turbo return line through a cooler befor sending back to block , not only would it cool the oil befor it went back to engine it would add about a QT or so to capatity , im also adding a oil temp. gauge to pan , maybe someone has tryed something like this and could share some tips