Thanks. Engine burns very little oil. Its about 1/8" below where I started at 2500 miles ago and some of that loss is the freaking valve covers whose bolts love to loosen up.
The Gumout Regane was added about 2700 miles ago and perhaps every ~11K miles before that on these plugs.
The last tank of gas of the 2500 mile roadtrip was Chevron, then Shell, then Valero twice, then Pilot. About 425 miles between fillups, can go farther on a tank but prefer to not draw it lower. Not sure if Pilot qualifies as top tier fuel, but Shell and Valero and Chevron do.
Pretty much getting the expected mileage, but always hope and try for more.
Wondering about opinions regarding heat range. When not doing long cross country drives most driving has been extremely short trip as of late, generally to store and back 1.5 miles away..
Engine calls for Champion Plug Type RN12YC.
Seems to run the same no matter what plug I have used in the past.
Someone suggested a slightly colder plug with an extended reach on this engine for better driveability and MPG's.
This plug is a 4 the 'someone' recommended plug is a 5 on NGKs heat scale.
$4.45 NGK 3459 ZFR5N Spark Plug - Same Day Shipping. Free Returns. PayPal Accepted. Secure Online Ordering. Est. 1969.
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