Valvoline premium blue 5w40 synthetic

[metstroke06]

Just changed to valvoline to try it. Runs very similar to mobile one 5w40 synthetic. I love it. Engine is smooth, and quiet.

[HeavyAssault]

Yep..those are my top two choices in oil for my motor!

[Baddestt]

^^^same here....though i have been using the mobil 1 the past two oil changes. But they are both the best oils for these 6.0s

[Squid4life]

How many miles on your engine? I assumed 5/40 would be too thin, was always told 15/40 Rotella. Interested in synthetic, but also scared of the $$$. You remember how much for 15 qts?

[metstroke06]

I bought 4 gallons at $23.00 per gallon at napa. Then took it to a local oil change place, they changed my oil for $30.00 and fuel filters for $59. So my oil change was about 130.00. Get an oil bypass filter and it will pay for itself and save you $$. I don't run a bypass because I don't know how it would affect my warranty. I love synthetic oil.

[cartmanea]

Its on sale at NAPA this month for $17.99/gal.

i also use the premium blue have been for years... dont know what i pay per gallon as i buy it by the 55 gal drum

[metstroke06]

Mine was definitely not 18$ or on sale. I will call napa to verify this. Maybe California is different considering every damn thing costs more here

[Squid4life]

What weight is everyone running? I was thinking 5 was a bit low.

Definitely interested in trying synth. I want this truck to last!

[Baddestt]

Use 5w40. It's thinner, will give better performance and slightly better fuel mileage. Use Valvoline Premium Blue Extreme 5w40 or Mobil 1 Turbo Diesel Truck 5w40. The Mobil 1 is $21 bucks per gallon at walmart...I just got four gallons yesterday at the walmart in North Austin, TX. Napa is your best bet for the Valvoline. Either is great....Mobil 1 is slightly more expensive and what I use the most