Thanks guys. What if you only put an average of 2,000 miles on your rig each year. Still change every 3 months? For me that's every 600 plus miles. I use Valvoline VR1 30W high zinc racing oil. My 235 is a '62.
My custom, with a similar low annual mileage situation, is to just change it every 6 months or thereabouts. Not saying that’s correct, but 3 months seems like huge overkill.