hi all, any else using/used penrite hpr 30 heard good feedback about it in rotas, it not as thick as hpr 40,50. but getting quite high pressure, 80psi on start up seems to start easier than the thinner oils, and get like 80psi in 4th doing 60kph unsure of revs as blew rev counter but roughly 3-4k. goes over a 100psi just after hitting boost, boost gauge only goes to 100.
any and all comments appreciated thanks

 

Sounds like a question that should be posted in your regional forum. I would imagine that you will get a response about the specific oil you mention.

You can read about oil viscosity here...

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/faq-3rd-gen-other-useful-links-68640/