What's your preferred motor oil?

[JeffG]

Mobil1 10-30 synthetic in winter, 15w-50 summer.

i have a hunch bmw doesn't use mobil because chickenfoot does.

[ehlpitel]

I thought you were supposed to use thicker oil in the winter?

[benDASHDASH]

Castrol GTX 20w50

[Tangent]

Castrol GTX 20w50

Exactly what I'm using now. Only because I can no longer find my long-time favorite Valvoline Racing. They still make it, but I just can't find it anywhere. Although now that I check Valvoline's website it says they carry it at Napa...

I haven't touched Mobil 1 since my dad tried it once in his Taurus SHO several years ago. Immediately after the change the engine was noticably noisier. He changed the oil again after just a couple of hundred miles and used Valvoline Racing and it was nice and quiet again.

I thought you were supposed to use thicker oil in the winter?

Cold temperatures make oil thicker so you want to use slightly thinner oils to compensate. Heavier (higher number) oil that's perfect in Death Valley summers would have the consistency of tar in an Alaskan winter, and the lighter oil that works well in the Alaskan winter would be ultra-thin and be on the verge of breaking down in Death Valley summers... Here's a FAQ I found on oil weights: http://www.tuninglinx.com/html/oil-change.html

[Jarvis]

I thought you were supposed to use thicker oil in the winter?

No. You have it reversed.

[Rob]

i use whatever's cheap. my opinion is as long as its changed regularly at 3k, my 13 year old relatively non-high tech motor will be fine.

[ehlpitel]

Exactly what I'm using now. Only because I can no longer find my long-time favorite Valvoline Racing. They still make it, but I just can't find it anywhere. Although now that I check Valvoline's website it says they carry it at Napa...

I haven't touched Mobil 1 since my dad tried it once in his Taurus SHO several years ago. Immediately after the change the engine was noticably noisier. He changed the oil again after just a couple of hundred miles and used Valvoline Racing and it was nice and quiet again.



Cold temperatures make oil thicker so you want to use slightly thinner oils to compensate. Heavier (higher number) oil that's perfect in Death Valley summers would have the consistency of tar in an Alaskan winter, and the lighter oil that works well in the Alaskan winter would be ultra-thin and be on the verge of breaking down in Death Valley summers... Here's a FAQ I found on oil weights: http://www.tuninglinx.com/html/oil-change.html

Thanks for the insight.

[2002maniac]

Target had some problem with thier price database about a month ago. I picked up 46 quarts of mobil1 for $1.22/qt

[permit]

lubromoly 10w-40

Same.

[Julien]

Target had some problem with thier price database about a month ago. I picked up 46 quarts of mobil1 for $1.22/qt

Nice!
I used Mobil1 Synthetic 15w50 in my m20b25, and now i use Shell 10w40 synthetic in my m21d24


Julien

[X2theZ3]

Target had some problem with thier price database about a month ago. I picked up 46 quarts of mobil1 for $1.22/qt

You thief!!!

[royalflush313]

I'm using Mobil 1 15w50.

However, I have realized that I cannot tell any benefits running this, as opposed to Castrol GTX which was previously in the car.
I'm thinking about going back to Castrol, unless there are some long-term benefits to running Mobil 1 synthetic (which I doubt).

[rs4pro3]

Quaker state synthetic

[parkerbink]

I haven't touched Mobil 1 since my dad tried it once in his Taurus SHO several years ago. Immediately after the change the engine was noticably noisier. He changed the oil again after just a couple of hundred miles and used Valvoline Racing and it was nice and quiet again.

This was exactly my experience.

[Alecs MacDonald]

Mobil1 15w-50 in my s14.