[AzCal Retred]

Re: Ace @ # 13:
I'm in agreement with the short change/low buck oil strategy.
Back when I was putting a lot of miles on my 1995 Toyota P/U (20K - 35K) yearly, I noted that a "standard" oil maintained good idling pressure numbers for maybe 700 - 1000 miles max. The synthetics were better at perhaps 1,200 - 1,800 miles before idle pressure levels dropped off. The variable was the oil bond integrity. All good at speed, but you could see a change had occurred.
Tossing the paltry quart every 500 miles or so gets rid of water (& resulting acids) and crud making it past the OEM Play-Skool filter. Waaay cheaper than replacing a crank or valve gear.