Thanks! If I remember right...the imco holds about 3/4-1 quart. I basically modeled mine off of theirs in a way so the capacities should be damn near the same....that's why I was confused when this started happening....I don't know if they have a check valve in the cap or if it is just vented. Suppose I could call and ask lol. I'm kinda leaning towards a clear one like yours...would let me see oil all the way to the bottle instead of having to have it almost 1/4 full before I can see oil. I have like 30-40 bucks in this one and a little time so not a huge deal If I have to change it. I'm thinking that on a stock bravo this would work great just maybe doesn't have enough room in it with having 1000 HP in front of a SCX hahahaha