Just tracked my car last night in 100F + temps for 20 minutes x 3 sessions + 20 minute cooldowns.
Verdict: I didn't log my temps but had no noticeable issues all evening. IMO you don't absolutely *need* an oil coller for casual track use but it'd probably be a good idea if you're going to be tracking often and aggressively.
Particularly the Robispec unit - why mess around?
