m6ttop

iTrader: (18)

what is this and is it better than the 5 and 10w?

CaliforniaBoy5

iTrader: (16)

all i can say is I use it.. no complaints on the mobil 1 0w-40... i use it because some guy said so on a forum here... lol

red_ryderSS

iTrader: (1)

I just put it in last night, runs good. I can already tell it cut down the engine noise. I changed from mobil 1 5w30.

hpjunky98

iTrader: (3)

I use it when i can find it. motor seems to like the consistancy...

m6ttop

iTrader: (18)

any long term users of this stuff?

ReFtheMC

iTrader: (6)

I've heard of "German Castrol Syntec 0w30," and that it's the best, but too hard to find and expensive when you do, unless you get lucky...

CaliforniaBoy5

iTrader: (16)

i personally think it is just the forum boner

BigDaddyBry

iTrader: (15)

I agree. Its like the hot item anyone can afford. I'm sure people put it down in their list of mods.

02NHRAtransAm

iTrader: (17)

brad8266

iTrader: (23)

I agree.

brad8266

iTrader: (23)

The 40 Weight is thicker than the 30 weight, thats why it cuts down on the noise a bit. The downside is that it doesnt flow as well through oil passages as a thinner oil.

The internet rumor is that Mobil 40 weight is more like a 30 weight in other brands of oil.

The 0w, 5w, and 10w part refers to the viscosity when cold. Once warmed up it will act as the viscosity of the second number ie 40 or 30.

ArcticZ28

iTrader: (14)

Also, one company's 5w-30 can be thicker or thinner than another's 5w-30. Just like two tires rated at 300AA can have completely different tread life. The prime example of this is GC 0w-30 is thicker than M1 5w-30, as GC acts as something closer to M1's 40w when hot. This is why it tends to quiet down the motor in some people's cars.

SS4Luck

iTrader: (10)

ive used m1 0w-40 for as long asi can remember and love it

93redBIRDman

iTrader: (9)

I just changed from mobil 1 5w-30 to 0w-40. Car felt considerably slower (thicker oil), but oil is there for one purpose, PROTECTION.

m6ttop

iTrader: (18)

I dont wanna be SLOWER!!!lol

ArcticZ28

iTrader: (14)

Your car will not be noticeably slower. That's a complete illusion. We're talking fractions of horsepower sacrificed with a thicker oil, and by thicker we're talking a very small difference.