Oil for my Trailblazer

[Z71 Kris]

Ok, I don't care what brand, but I want to know should I use 5w30 or 10w30, or even 0w30, its a 4.2 lt 6cyl ls or lt, and I think it takes 7 qts of oil, does that sound right? I think I want to use the 5w30, thats the general grade oil, the 0w30 is the hi performance, and is a little heaver bodied right? When would I want to use the 10w30?

 

[svensk]

0w30 would be lower viscosity, great for cold temps. 10w30 is generally fine year-round, but a lot of people use it in hot areas to provide added protection.

 

[Bigredmariner]

Personally I would go with what is on the fill cap. Or for that matter what the manual says.

 

[Zembonez]

5W30 would be my choice year round.

 

[Moeman]

Personally I would go with what is on the fill cap. Or for that matter what the manual says.

And man he is...

 

[DV2000NJ]

5W30 would be my choice year round.

 

[txab]

5W30 would be my choice year round.

+1

 

[svensk]

And 5w30 is what's recommended right for the TB?

 

[PenguinLTZ]

5W30 would be my choice year round.

 

[merlin5577]

Unless you live in a really cold climate, stick with the 5W-30. The first number (5W) in a non straight weight oil is its ability to flow when cold. The lower the number, the better it flows. So, in the cold (32*F or colder) a 5W will flow better then a 10W, and a 10W will flow better than a 15W, etc... Contrary to popular belief, the W in 5W does not stand for weight. It stands for winter.

The second number in 5W-30 is the oils actual weight; 30. The weight reflects an oils ability to flow when its hot. The higher then number, the better it flows. A 40 weight will flow better then a 30 weight when hot (212*F or higher), a 30 weight will flow better then a 20 weight, etc....

So, when we add these two together we get 5W (the oils ability to flow cold) and 30, (the oils ability to flow hot). Make sense?

Now, be careful. Also on the market are straight grade oils. These oils are only measured in weight (ex; 30 weight) because they are not intended to be used in cold weather. Lawn mowers, hedge trimmers, etc... usually use a straight weight oil.