I previously used Mobil 1 but switched to Red Line, only because I'm comfortable with it. Not suggesting Mobil 1 had issues. But related, I called Red Line Oil years ago about oil temps approaching 250 degrees and the tech guy chuckled, then gave a reassuring replay not to worry.
Another opinion regarding temp here:
https://www.streetmusclemag.com/tech...-you-need-one/
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE