Have been kicking tires of late, but looks like a case of paralysis by analysis; nothing shiny in the driveway. Have a wedding on the east coast to attend in June, but I want to drive and visit a few places enroute instead of fly. Total interstate miles would be around 6K. But, the "newer" and more economical car for the trip is our 2006 Civic. (Yep, I have earplugs for stretches of rough pavement.)
Current fill is Honda semi-syn 5W20 from the dealer, and it has done well. Cruising around ID, MT and WY last fall obtained 40 mpg at 75 mph. OLM is only at 25% and we are close to a year. Have PP 5W20 (not the new stuff) ready to go next month, so the question is: Could there be enough advantage in highway MPG gain to justify using something different for the next OCI, like the Mazda w/moly? Or, would any gain be too miniscule to measure? (For the arithmetic, figure 150 gals. @ $3.50/gal. for the trip, and the cost of the PP on hand @ $5.00/qt.)
Would also appreciate an oil filter recommendation (or tip on what to avoid).
Thanks!
Current fill is Honda semi-syn 5W20 from the dealer, and it has done well. Cruising around ID, MT and WY last fall obtained 40 mpg at 75 mph. OLM is only at 25% and we are close to a year. Have PP 5W20 (not the new stuff) ready to go next month, so the question is: Could there be enough advantage in highway MPG gain to justify using something different for the next OCI, like the Mazda w/moly? Or, would any gain be too miniscule to measure? (For the arithmetic, figure 150 gals. @ $3.50/gal. for the trip, and the cost of the PP on hand @ $5.00/qt.)
Would also appreciate an oil filter recommendation (or tip on what to avoid).
Thanks!