I'm switching to Rotella-T synth. and have read about engines burning a lot of it once the owner changed. why? I want the cleaning effect of a HDEO, and would like to run 5w40 in my Ram V10, but don't want to start drinking it! Havve used M1 10w30 in the past, I believe it went through 1 quart every 3k. Don't believe it burns dino...