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Please post a voa on the castrol 0w40 ! I'm a fan of castrol products as well . Im curious if towing will have much impact . I havnt been letting it idle much since it's warm and I just changed it . I also wanted to note that the engine felt really smooth with the 0w40 .

On a side note , I have a fresh 420hp/485 ft lb Pontiac 406 roller engine ready for my gto , was gonna run Brad penn 10w40 but what do you folks think about 0w40 for this app ? The builder still suggested higher zddp levels even though it's a roller cam . Mobil 0w40 still has 1000/1100 ppm . I...

I think I'm gonna stick with the 0w40 , and keep changing the oil when the monitor is around 25% . I am tempted to try the rotella t6 but just refilled with Mobil . The winter warm ups were for defrosting but again , as I work out of town , I do t do that every day. I've owned the truck just shy...

I primarily run 93 octane , but used 87 most of the winter. Seems more responsive with 93 but didn't notice any mpg difference with 87 . Truck weighs 6000 lbs with me in it and 3/4 tank of fuel, ran a 15 flat at 92 mph with 87 octane , 3.31 gear and about 80 degrees outside. I would even like to...

Apprx 10 min idle time in winter (auto start ) but I also only drive it about every other day . I think the fuel dilution is just a characteristic of direct injection . The oil had always smelled gassy even before I added the auto start. I wish I souls had tested the Kendal 5w30 , it drained out...

I don't drive much and I put the 0w40 in the late fall last year . It cranked a heck of a lot easier in the bitter cold then with the 5w30 the year before. I think I'll keep changing it when the monitor gets down to the 25% range . Also the 0w40 has had 0 impact on fuel economy. Mpg has actually...

This oil sample is from my 13' f150 ecoboost . This is the 3rd oil change , previous two were done at 1500 then 6500 miles with Kendal full syn 5w30. This oil change was done with mobil 1 0w40 and changed with 27% left on oil life monitor . I don't tow and mileage is 50/50 town/highway with 3...