@Stan Galat posted:If you want more air-- I'd open up the deck lid rain tray or put a hole behind the license plate or both. The theory can be tested by having him drive around with the deck-lid popped a few inches (held open with some gizmo or other). 5 bucks says it'd help.
That's my opinion. Everybody's got their own. Your mileage may vary.
Here's a really good (long) read about engine temp/oil temp.
https://www.thesamba.com/vw/fo...highlight=volkaholic
It probably applies more to Speedster owners than it does Spyders, but it's useful anyway. And it's what I based my decision to replace my cheeseball shroud on.
Not to turn this into an oil thread, but here's my 2¢: VW and Porsche spent tens of thousands of hours researching and developing a forced air cooling system for their motors.* And they work. IMO, putting an external oil cooler on an improperly designed air cooling system is nothing more than a bandaid. Unless you've got 4 cylinder CHT monitoring like Stan does, you have no way of knowing whether your P/C and cylinder heads are being properly cooled.
*Granted VW/Porsche never envisioned 2300cc Type I or 2700 Type IV motors, but I trust the people who did when they tell me a properly air-cooled motor <2L doesn't need an external oil cooler. And my experience with the Thing shroud and the incorporated Type IV oil cooler backs that up.