http://www.redlineoil.com/product.aspx?pid=43&pcid=8whats the part# on that Redline Lightweight Shockproof oil?
Some have one, some don't. Guess it depends on the way the tranny is designed, and what application it's used in. Some pump oil onto the gears, others rely on the fluid splashing onto them. I think the MR2 may even have a tiny fluid cooler (there's a little external loop on the case). The issue with Lightweight Shockproof is that it forms a viscous film on metal. This is also why it's so effective. Since pumps tend to have a metal filter mesh, the filters grab onto little metal fragments. The fluid keeps a constant coating on these fragments, along with the filter, which can eventually cause them to clog. Some pump systems also use smaller passages than others, which can also lead to clogging. The MR2's system doesn't have an issue with this for some reason, and I'm grateful for it.interesting find. there usually a pump inside the tranny?