Look I am not a thermodynamics expert or hold an engineering degree in fluid dynamics; however, I will tell you though that I did purchase a cooler collar for my 2.4 liter and I did notice a difference in the temperature gauge of 10+ degrees on very hot Georgia afternoons. I even went as far as to additionally install the heet sheets as an extra measure. Granted the 2.4 is not known for overheating, but if I can keep the temp. at 200-220 on the hottest summer days even with AC then I achieved some small victory and extended some life in the engine.
I have been driving air-cooled Porsches for over 25 years fellas and learned alot along the way. Snake oil or not, I do SEE a change on my gauge and its telling me something is happening.
For the small price it was certainly worth the purchase. For now I will just rely on what my eyes are seeing and leave behind all the hypothesis.
Regards
Bob
73.5T
