Quote Originally Posted by gavinwibrow View Post
Further searching - My answers can be found here - very similar situation to my error buying. Penrite HPR Diesel 5 - change to labelling - Terracan Technical - Australia4WD Forum
How does that thread answer your question? That thread is about the old HPR Diesel 5 and the newer HPR Diesel 5 - where your question is about HPR 5 (not the Diesel variant)? That thread also significantly lacks in actual technical information from the Penrite response.

But your question was in relation to mixing it and I don't see anything in that thread about mixing different oils.