Originally Posted By: kschachn
So one should not believe ExxonMobil when they say:
"Mobil 1 0W-30 Advanced Fuel Economy is engineered to offer the same high temperature/high shear viscosity performance as 5W-30 and 10W-30, so it is a good fit for the Florida heat. You can use it with confidence. Same goes for Mobil 1 0W-20 Advanced Fuel Economy and 5W-20."
They're misleading people by omission. In an abstract sense, they are not incorrect (and that's all that's required for legal CYA), but they omitted identifying the specific type of 5w30/10w30 that AFE shares an HTHS with, the type of 5w30 and 10w30 unique to the North American continent with ~
If you ask me, the 2.0DISI *cough* err I mean 2.0 Ecoboots will 'survive just fine' on ~3.0cP, after all, their higher powered, higher torqued big brother, the 2.3L DISI did so just fine, and even on 5w20 for nearly ten years now.
The only problems that surfaced were from occasional severe viscosity breakdown in the turbo bearing section (when using only low HTHSV RC oils mind you) causing leakage into the K04 turbine housing (and oil smoke) and premature timing chain wear when using the same [censored] low HTHS 30 grades. No big deal, that kind of performance could still be considered "just fine" by some person.
But OP, if you have any sort of estimation that you'll at all have heavy demands on the engine, a 40 grade will actually be more suitable to protect your investment in the long run. But after all OP, it's your investment, not Ford's, not the EPA's, yours. Choose wisely.
So one should not believe ExxonMobil when they say:
"Mobil 1 0W-30 Advanced Fuel Economy is engineered to offer the same high temperature/high shear viscosity performance as 5W-30 and 10W-30, so it is a good fit for the Florida heat. You can use it with confidence. Same goes for Mobil 1 0W-20 Advanced Fuel Economy and 5W-20."
They're misleading people by omission. In an abstract sense, they are not incorrect (and that's all that's required for legal CYA), but they omitted identifying the specific type of 5w30/10w30 that AFE shares an HTHS with, the type of 5w30 and 10w30 unique to the North American continent with ~
If you ask me, the 2.0DISI *cough* err I mean 2.0 Ecoboots will 'survive just fine' on ~3.0cP, after all, their higher powered, higher torqued big brother, the 2.3L DISI did so just fine, and even on 5w20 for nearly ten years now.
The only problems that surfaced were from occasional severe viscosity breakdown in the turbo bearing section (when using only low HTHSV RC oils mind you) causing leakage into the K04 turbine housing (and oil smoke) and premature timing chain wear when using the same [censored] low HTHS 30 grades. No big deal, that kind of performance could still be considered "just fine" by some person.
But OP, if you have any sort of estimation that you'll at all have heavy demands on the engine, a 40 grade will actually be more suitable to protect your investment in the long run. But after all OP, it's your investment, not Ford's, not the EPA's, yours. Choose wisely.
