I would run 5W30 RL in a heartbeat. Again, RL 5W30 has HTHS 3.7. That HTHS is probably higher than PPE 5W40 has.
Originally Posted by RIPGermanCastrol
I take your point, and I am just a filthy casual so don't expect a good response from me. I took the advice posted here and assumed it's fine based on the manual's allowance of 5w40. However, because it really is on the thicker side of the 40w spectrum, perhaps I will swap it out for RL 5w30 or PPE 5w40 when it gets cooler out. I assume this should be a fine summer oil, no?