[Dave at Pelican Parts]

Cooling and capacity are two separate, almost unrelated, issues.

If you want to keep the light on in the corners, and you don't have long high-G corners, simply overfilling the engine by a half-quart may do it. If you have longish moderately-high-G corners (i.e., a long sweeper with aggressive street tires on the car), the Tuna Can works just fine. It now takes about 3 1/2 on-ramps in a row to get the oil light to come on in my car.

If you are running race tires (slicks or "competition" type tires) and running on courses with sweeping turns, the Tuna Can may not be enough for you. (It is for me, so far, but I am still running on hard-compound street tires.)

I would not recommend the deep sump pictured above--it just hangs down too darn low!!

The "Accusump" pressure accumulator can/should work well for maintaining oil pressure. However, there can be problems with the install. There are one or two people over on the Shoptalk Forums who have lost engines to Accusumps that (presumably) were improperly installed.

Cooling is a separate issue. The deep sump and the Tuna Can both do provide very slightly more surface area down in the sump, which can help radiate a tiny bit more heat than stock. I doubt it's enough to measure, though. An external cooler is the best way to get rid of unwanted heat in your oil. Where to mount and how to plumb the cooler is always an interesting question...

--DD