80 series: M1 5w40 diesel truck, 8-10K between changes
Subaru Outback XT(turbo): M1 5w30 extended performance, 8-10K, went 15K once.
I've never done a Blackstone report. Dump at O'Reilly's. (generally where I buy the oil too) They run sales on the gallon M1 jugs regularly and they are the only ones in town with the 5w40 in stock.
Speski OffRoad LTD, Cargo Solutions for Toyota 4x4's http://www.SpeskiOffRoad.com
"80 series, with a fridge"
1976 FJ40, Project with little progress.
2004 Starcraft 10RT