@marlinjack posted:...It has been mentioned that Newer Cars can run at 190F-205F Degrees, and probably much Hotter.
This is because the Engine Exhaust must be Hotter to Activate the Catalytic Converters!
I know of No Panteras running Cats.
When Running the 180F Stat, I have personally had My 351C at 230F on the Digital Gauge, without Boil-Over. Although Out on the I-5 Freeway In California, in the Middle of Summer. Ambient temps at 110F...things were Getting a Little Nervous, after 3 Hrs. at 90 MPH and pulling off the Freeway and shutting down to refuel. But, it never became a problem. It's all about 'Holding' the System Pressure!! I run a 16 lb. Cap, any Cap, Lower, expect to Boil-Over when things get 'Critical'! In My Experience.
MJ
Totally agreed. The only thing is don't go higher then 16psi but 15-16 psi is perfect for this system and is what makes it work at 240°F without boiling over.
You are good on oil temps up to about 220F°. Race cars typically will go another 15 to 20 hotter. That's why you don't use the $.99 a quart oil.