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I do the least amount of effort to document my oil changes. I take a picture of the milage, separate picture of oil used. Date is then on both photos.

Thank you for the borescope pictures. Agree with you that flow restriction is minimal. No matter how you clean the valves, or catch can exc. it is a fact that every 2.3 or 2.7 eco boost intake valve will look that way. A lot better than when the eco boost was just DFI. Clean it up, it will come...

Agree that the engines in the Ranger are optimized for E10 via the ECU.

We are both right. Check out the BTU per gallon under HP here. https://eco-savvy.blog/non-ethanol-gas-vs-ethanol-gas-comparison

I hear 10% ethanol fuels have an overall 3% reduction in power over non-ethanol fuel. Your engine ECU is used to it though. Suggest premium fuel, as I see you use. Top Tier + fuel is good advice.

I only buy Costco gas, so this is the average Costco per state. The State gas tax needs to be subtracted to see the fraud rate. https://costcogaspricelive.com/ Annual Highway Report https://reason.org/highway-report/28th-annual-highway-report/california/

No ethanol free here in Kaliforn. But because of the ridiculous price I thought I would start with regular gas. 1500 miles on my 2.7 I switched over to premium and my MPG increased to beat the price difference.

Wow. My favorite oil is PUP. Now I think a switch to Mobil 1 Truck and SUV is in the future. But that means the price of all motor oil is going up.

Ford spec. WSS-M2C961 is also WSS-M2C971 rated. (GF-6 and GF-7) Personally consider the dual port and direct fuel injectors address the IVD issue. As far as the wear issue I do not know another way to follow the wear in an engine other than UOA. BTW the intake valves use carbon on the intake...

There is no wrong answer. I do like listening to Lake Speed jr. cause his business is used oil analysis. About the only thing he said I do not agree with him is to pre fill an oil filter. Personally, I do the "flood mode" after an oil change. That eliminates any manufacturing boogers in the new oil.

Just my view, cause you cannot go wrong with most any choice. While GTL oil is group 3 oil, it does not have the drawbacks of traditional group 3 with crude impurities. GTL was given the group 3+ nickname. Shell makes its GTL at Pearl refinery that Pennzoil Platinum uses. PAO group 4 has one...

Turbos keep the HP up at elevation.

The 4x4 off road package 2.7 has metal skid plate with 4 bolts. 2 bolt notches foreword and 2 regular holes rear on plate,

Getty’s Garage comparing Chevy 2.7 and Toyota 2.4 to Ford Ranger 2.7

But what about a metal splash guard? Is that for hard water?

Plate = flat Pan = container So….

This engine seems to fit this issue described here. https://fourwheeltrends.com/fords-2-7l-ecoboost-engine/ Unfortunate for the owner of this engine.

There was an issue with sodium filled exhaust valves for that year. Ford has addressed. Unfortunately, it was the issue for this engine. After years, engines have no issues with the exhaust valves. Does not mean something else may sneak in but not worried about the welds on the liquid sodium...

One check and have the pink slip in my safe.

A very important point for some engines is the coolant mix with water. I cannot say how important the coolant type is to the Ford 2.7 engine but for Mazda you can do serious damage to the engine by using the wrong coolant.