So which Oil Is Best??
#62
#63
I been using Mobil 1 5w-30 full synthetic. i wanna switch over to German castrol 0w-30 but isn't that a lighter weight oil than 5w-30. i tried 0w-30 Mobil 1 once and it burned threw that oil like crazy barley had a drop on my dip stick. and i change every 3500. maybe it was a fluke i may have done a lot of racing during that change who knows.
#65
I been using Mobil 1 5w-30 full synthetic. i wanna switch over to German castrol 0w-30 but isn't that a lighter weight oil than 5w-30. i tried 0w-30 Mobil 1 once and it burned threw that oil like crazy barley had a drop on my dip stick. and i change every 3500. maybe it was a fluke i may have done a lot of racing during that change who knows.
In comparison Castrol Syntec 5W30 is a very thin 30wt its almost a 20wt.
#66
#67
#71
I been using Mobil 1 5w-30 full synthetic. i wanna switch over to German castrol 0w-30 but isn't that a lighter weight oil than 5w-30. i tried 0w-30 Mobil 1 once and it burned threw that oil like crazy barley had a drop on my dip stick. and i change every 3500. maybe it was a fluke i may have done a lot of racing during that change who knows.
Mobile1 has been known to burn away ever since they changed their formula a few years ago.
#72
#73
Think of it this way...the first number in the equation is the start up viscosity. 0w has a thinner start up viscosity when compared to 5w or 10w. The second number is the viscosity at operating temperature. So 30 is going to be a thinner viscosity at operating temperature compared to a 40. I did a bunch of research on various forums and on www.bobtheoilguy.com . In my opinion, it seems like its always a safe bet to go with a 0w oil. If the oil is less viscous at start up, that means the engine can move the oil into the engine much easier than a thicker oil. This is the reason its highly recommended to use 0w oil in cold temperatures. For warmer temps, 0w is not going to hurt anything either. In warmer temps you can get away with a 10w oil because its not as cold and does not take as long to get the engine to operating temp. Now just because it says 0w, that doesn't mean its a thinner oil...is just thinner at start up. For example, a 10w-30 oil is actually thinner than a 0w-40 weight oil when at operating temperature. The 0w-40 is only thinner at startup. Again, this is so the oil can get into the engine quickly for those first few minutes at when being warmed up. At startup, this is where most engine wear occurs, so it makes sense to me to go with a 0w oil, especially so if you live in colder climates.
Now with all this being said, it comes down to brand as well. The German Castrol 0w-30 oil was the favorite amongst G owners and this forum. From research, it was because of being made in Geramy and set to European standards, that it performed more like a 40w oil. I decided to change to Mobil 0w-40 personally. I can't get the GC where I'm at and from the numbers, the Mobil 0w-40 seems similiar to the GC oil. On another note, I read somewhere that when a car starts to rack up miles, it might be a good idea to increase the oil viscosity as well. Another reason I went with the 0w-40. I'd be interested to know how the Amsoil 5w-30 or 0w-30 European Formula performs....hmmm....for now I'll stick with the Mobil 0w-40 for few oil changes. Seems to be working for me so far. And, this might have nothing to do with it, but its the oil that is used at Nissan when changing oil for the Nissan GTR. Says it right on the bottle too.
Now with all this being said, it comes down to brand as well. The German Castrol 0w-30 oil was the favorite amongst G owners and this forum. From research, it was because of being made in Geramy and set to European standards, that it performed more like a 40w oil. I decided to change to Mobil 0w-40 personally. I can't get the GC where I'm at and from the numbers, the Mobil 0w-40 seems similiar to the GC oil. On another note, I read somewhere that when a car starts to rack up miles, it might be a good idea to increase the oil viscosity as well. Another reason I went with the 0w-40. I'd be interested to know how the Amsoil 5w-30 or 0w-30 European Formula performs....hmmm....for now I'll stick with the Mobil 0w-40 for few oil changes. Seems to be working for me so far. And, this might have nothing to do with it, but its the oil that is used at Nissan when changing oil for the Nissan GTR. Says it right on the bottle too.
#75