More than once I have read that there is an MPG advantage to running 2 quarts low on engine lube oil.
To gain an EPA advantage the tray would have to have a measureable effect at lower rpm, 1600 rpm and lower.
If you ran a six vehicle convoy style Type IV test, and swapped trays at midpoint, in theory you can detect 0.1 MPG differences.
Two vehicle experimental tests seem to limited to detecting +/- 0.2 MPG
One thing that bothers me is that for 1994-1995 Magnum 5.9 V8 Ram trucks,
Mopar Performance heavily advertised an R/T aftermarket package of
MP PCM requiring Premium gasoline
KN filter element
RT Magnum camshaft
Mid length Tri-Y Mile Leach manufactured headers
Why wasn’t a windage tray also offered if it added 5 hp at 4000 rpm?
The low particle removal efficiency KN filter element allegedly added that much
at least when new before the first cleaning.
Did anyone ever add a vacuum pump/dry sump modification to a Magnum V8 and post a dyno test?
