Just bought a VMAX last weekend, I plan on start using synthetic at the 1k mark. What oil are you VMAX guys using? I was thinking of Amsoil or Redline, not really a fan of Royal Purple.

 

In Texas summertime Royal Purple 10W40 here revs really smooth!

 

I've decided I can't justify the cost of the ~$7 a quart oils so I'm sticking with Mobile 1 in my 100K+ engine.

 

ive decided that i cant justify the cost of even $5 a quart so i just use castrol convential oil and change it religiously

 

I'm getting Mobile 1 @ $19.98/5qt. jug at the Wally World and I change it at around 5000 to 6000 miles. I think the conventional stuff is just fine too as long as you are changing it at reasonable intervals like you said.

 

I've decided to go with Redline 5W-30. I plan on keeping the truck for a long time. Nothing too good for my pick up!

 

Dont put redline in. It will void the warranty if the motor has problems. I use Royal Purple every 3000 miles.

 

why do you say this?

 

Are you saying Redline will void warranty and Royal Purple will not? I work for a dealership and brand of oil never comes into question for engine warranty work. Granted I dont work for GM.

 

I just got my 07 Vortec Max and only have 800 miles on it. Plan on using Mobil 1 eventually after a decent break-in.