General Tech What engine oil do you use and why?

[Seth]

I am using Royal Purple but I have heard good things about Amsoil as well. Just curious what everyone runs and if have a specific reason.

 

[Shawn]

Mobil 1 in my cars.

 

[OrvisKrawler]

i also use mobil 1

 

[iamsparticus]

Amsoil rocks

Castrol full synthetic, but amsoil is top notch i wish i could afford it but when i do a engine swap i will use amsoil and nothing else becasue they have a way of making there high viscosity oils not thick which is a huge advantage on wear in starting the engine

 

[Greg]

Valvoline dino for the gas engines... good stuff IMO. It's real clean, I like using it to break in newly rebuilt engines too. High quality oil for a good price.

Rotella for my diesel and the motorcycle. It's heavy duty oil and takes the abuse from both those engines.

 

[Milner]

mobile 1 in the Libby. They are the Easiest to find full syn for diesels
Rotella in the PSD, just always have.

 

[Spork]

The cheap stuff cause it's cheap

 

[cheepin]

Valvoline full syn. in the wife's '06 Chevy.Valvoline Max highmileage in my others.

 

[cruiseroutfit]

Mobile 1 syn w/ Lucas in the Taco
Castrol dino w/Lucas in the Cruisers

 

[74highboy]

Royal Purple its what i get the best deal on

 

[choptopbII]

Valvoline for my toyota beacuse its semi cheap and Rotella for my dodge beacuse its one of the 2 heavy duty diesel oils that wall mart has.

 

[Brett]

Valvoline dino oil for me. Just have always liked it...for no reason.

 

[Grim]

Chevron oil , because they spend millions in R&D , not advertizing.

 

[str8axleguy]

I run royal purple in the sami, just because I heard it is good really expensive though. Run valvoline 15 40 the blue one in the powerstroke, can run up to 10 k between changes but I only go 5

 

[Herzog]

Chevron Delo 400 in the Cummins, Valvoline in everything else.

 

[Corban_White]

Mobil one in the taco and all the bikes. Valvoline max life in the 91 GMC and 99 Accord.

 

[Silly Willy]

Valvoline High Millage... Engine Millage guarantee.

 

[neagtea]

Royal purple in the durmie and victories with amzoil filters and fuel additive.

 

[jackjoh]

What ever the manual says because all oils are good if they have the required specs.
The most important part is the interval, follow the manual.

 

[Caleb]

Mobile 1 syn w/ Lucas in the Taco
Castrol dino w/Lucas in the Cruisers

I'm curious why you use Lucas? I used to use it too, back in the day, but for some reason have stopped. (maybe because I've gotten too lazy to even do my own oil changes ) Do you notice a difference?