Originally Posted By: raytseng
Originally Posted By: Bottom_Feeder
My 2015 Accord Sport is going to need its first oil change real soon, so I picked up some Mobil 1 EP and a Fram XG filter from the local soul-sucking Walmart. My previous Impreza and my wife's Corolla both use 5w-30 which already seems a bit thin to a guy who grew up putting 10w-40 in a succession disco-era Chevys, but 0w-20 feels like it's about as viscous as water! I know it's able to do the job and modern motors are designed to use it, but jeez, I'm having a hard time wrapping my brain around how that's possible.
Just observing, move along...
yea, as mentioned above, you need to realize that you're not observing it at operating temperatures.
The whole point of multiviscosities is that the magic additives make the oil resist thinning like a straight oil as the temp increases.
Perhaps to wrap your head around it, go watch those youtube low temp pour tests at freezing, and then you can have a warm fyzzy feeling that the "thinness" is helping the oil get to the engine faster during startups and you are ready for the cold.
Wouldn't it be "resists thickening as it cools"?
Since it was designed as a 20 grade, it would fall into a certain cst range at 100c- and don't they add the VIIs to reduce thickening from it's designed viscosity grade?