Again, one person (a different one this time).
Okay, I'll play along.... You're suggesting that Honda has moved to 0W-20 at least partly to help deal with their VCM system ? Yet you fail to acknowledge that a) Honda still uses VCM today, keeps updating it (they're on "VCM-3" currently), and recommending 5W-30 engine oil (in other countries).
Another suggestion since OP seems to live in the south, or a desert:
I did not suggest that. I observed that some people think 0W20 will help with VCM issues. I don't know if it is true. I think we can pretty definitively say that Honda has not recommended "moving" to any particular oil grade based on the oil better managing VCM. Honda, like other manufacturers has for more 20 years recommended XW20 oils for cars sold in the states. This was primarily based on the efficiency that that these oils provided, and using these oils has been to nobody's detriment. VCM is a slightly unreliable system that was introduced after and separately and unrelatedly to the oil specification question.
Run it , it will not hurt a thing. I have never refilled the factory fill with their recommendation. These low viscosity grades are purely for "CAFE" standards that might give an extra mile or two per tank full.
Whoa!!! Don't drive your 0W20 equipped vehicle if it's more than 68 degrees out. Please note that this is independent of engine temperature. Great chart.
For the injectors I run Redline SL1 at 60% and 20% olm. Run the proper spec and move on. Disabling the VCM keeps the engine happy.
Yes. I understand macroscopic effects and orders of magnitude and the variable distribution of carbon chain lengths among grades of oils.
I want to be respectful, but you pulled this short sentence completely out of context. You know you did that, right?I guess Honda should just lay off their entire technical writing team, along with all their engineers, because you've determined that what Honda specifies is not relevant. Makes sense.
I've said more than once that people can (absolutely) use 0W-20 in their Hondas. I have NEVER said they can't or not to.
Wat ?
AM - study up on positive displacement oil pumps that are use in engines. This is why "PD Oil Pump" should be on the "bingo card".
It's there because the operating oil temperature in some engines is effected by the ambient outside temperature. They spec higher viscosity oil for hotter climates because they want the higher HTHS viscosity to maintain an better MOFT and engine protection ... bingo, bingo.I'm no longer interested in 0w20 in hot weather until i educate myself more on why the low upper end temperature band is there.
Dang it...I may have to add this in my next iteration.AM - study up on positive displacement oil pumps that are use in engines. This is why "PD Oil Pump" should be on the "bingo card".
Positive Displacement Oil Pump ... why oil passage size doesn't matter.
Great movie. Great scene. RIP Bill.
