There was an old Hardware store near me here in Los Angeles that recently went out of business that still had several bottle of T-Plus for sale....At $5 a bottle, picked up a bottle, and yes its white white inside,,,,
Mobil 1 10w-30 up until 275,000 miles is when the engine really started to burn up oil and loose oil Psi... From that point is when I have gone up in thickness gradually with better results as I have gone thicker and thicker for the last 50,000 miles....Engine runs very strong..
I usually put in a Bottle of MMO 250-500 miles before my oil change to help loosen and clean the engine up as my oil come out pretty black at 5000 mile intervals.....
OK, So got some miles now on the 20w-50...My Psi is really good, for my engine, 42.5 Hot Psi while Towing on Freeway at 3000 rpm's..Hot Idle at 25psi.... using about 1 quart per 1500 miles.... So far results are excellent... Also, my very first full tank of gas, not towing, i got my best MPG...
20w-50 Chevron oil going in this week getting ready for a camping trip for next week, ill come back with my oil PSI numbers and consumtion after 2000 miles in a month.... Im at 325,000 miles now BTW...
Asking this question becasue the Chevy Dealership put in Dexos 1 oil in my Brother's Chevy Cruze Deisel that requires Dexos 2 (5w-30) Diesel oil....And he has driven it 5000 miles...Car already has DPF issues as it is....
So my local Automotive shop uses Pronto Chinese Oil Filters for doing oil changes... I went on a trip a few hours on the Freeway in my Chevy Silverado within 100 miles after the oil change and noticed 30psi Oil pressure on down fom my normal 42.5 Psi when on the freeway... Hot Idle down 5 psi...
Back with an Update Guys! So I went on a 4000 mile roadtrip with my Truck, starting in Los Angeles, went to Yellowstone. Mount Rushmore, Zion, thru vegas and back home while Pulling my 30ft Travel trailer.. Trip stated with 308,000 miles, and As i always change oil at the 5000 mile marks...