Mobil 1 Truck and SUV version

[kpaske]

I'm actually gonna try Chevron Delo 15w40 next change after reading a bunch of stuff and this thread about Shell Rotella 15w40 fixing the Isuzu 3.5L oil consumption problem for somebody:
http://forum.planetisuzoo.com/viewtopic.php?t=7033

I would personally shy away from using anything too different from the 5w-30 recommended by Isuzu. Oil consumption is indicative of a bigger problem such as worn rings or a leaking gasket. I think maybe a heavier weight oil masks the symptoms for a while, but it doesn't actually correct the source of the problem.

[transio]

Oddly enough, I use Mobil 1 5w40 "Truck & SUV" motor oil for my Elise.

Sounds odd, but it's per manufacturer's specs!

[WormGod]

My recent switch-over to this black gold was a great improvement to my engine . Only 40k miles on the engine but it was already getting some minor pinging. All gone now. Highly recommended.

[kpaske]

Do you think motor oil has an effect on pinging? I switched from AMSOil 2000 Series 0W-30 (supposedly one of the best motor oils available) to Mobile 1 5W-30 a number of months ago, and although I never thought there was a correlation, I haven't heard any pinging in quite a while. I figured it was cheap Arco and Aafes (military PX) gas that was causing it, but I still use the same fuel and I think the problem has gone away. Maybe it was the oil???

[blacksambo]

I'm still love'n this 5w-15 Mobil 1 for trucks/SUV's. We've definitely got more get up and go and both of ours ('99's 80 K miles) are running quiter than on the 0w-30 Mobil 1. I think it's got to be engineered differently or something (even though a little voice in my head keeps saying "it's just marketing hype"???)