[SentraSE-R]

I'm checking in after a couple of days at my mom's w/o Internet access. I've driven a lot of highway miles, Bay Area to SoCal to ABQ. I'm going to start a new mileage log for my car, and will post the results. There's a slight mileage penalty, but it's mostly due to the cold weather and elevation gain driving to 7000' elevation, rather than ending EOC P&G. My highway technique remains unchanged since my smog testing education.

I do run a grill block (and smaller F-1 side mirrors). This morning's ~20F temperature in Flagstaff would have justified a block heater. I don't use them in coastal CA. I'm not sure there's a net gain from the electricity used to warm the coolant v. the miniscule gas savings from warming the engine up sooner.


My grill block has split upper and lower portions. I had both fully blocked this morning. About 2/3 of the way from Flagstaff to ABQ, my coolant temps rose over 204F on uphills and steady state driving, so I removed the entire upper grill block.

Driving from the Bay Area to SoCal, I noticed temps >204F 15 miles from home, so I removed 1/3 of the upper grill block. The coolant temps topped 204F climbing the Grapevine, so I pulled over and removed the remaining portion of the upper grill block.

I don't do much DFCO, but will do it soon to observe its effects on cat temps.

I appreciate the suggestions for efficiency. Assuming I implement them, I'm still left with my personal conclusion that EOC P&G is a gross polluter.

p.s. The Magnaflow cat isn't legal in CA unless it has California Air Resources Board certification. Unless I'm missing something, Magnaflow doesn't mention CARB certification for its cats.