I'll be taking the 1990 Sambar Try XS SC on a road trip from Renton, Wa. to Huntington Beach Ca. this December. I'll keep track of my MPGs but plan on keeping it near the 'peak torque' (~4000rpmish range) 80kmh to yield the best MPGs on the highway. As for what to do prior...I've already changed the oil Rotella T6 5w-40, full tune-up, valve lash checked, gear oil changed (Amsoil 75w-90), diff oil changed (Amsoil 75w-90), air filter, coolant, T-stat, Radiator cap, coolant hoses under supercharger/TB changed, Knock sensor, all grounds cleaned, TB cleaned, shift bushings (frt/rear), brake bleed, belts, fuel filter, timing belt & tensioner and supercharger oil changed. The tires (incl spare) are new. Vehicle had 51,7XXX original kilometers when I shipped (May 2023) it over from Japan (1 owner) I'm now at 54,7XX kilometers.
Plan on taking my tool box and a couple extra belts. Don't have much beyond that to take. Been driving it daily and figure if (big if) something I replaced would fail it'll be before my departure.
Sweet, I went on a big loop around WA this year but nothing that far. Trust your gut and listen to your rig. Keep us posted on this epic trip PNW Kei Group thread - https://www.facebook.com/groups/pnwkei/permalink/6509475755770671/?app=fbl
I will take a couple water temp senders I have one for the gauge and the other for ECU and a couple belts. Nothing beyond that except for my toolbox. Going to change out the O2 and exhaust-thermo sensors here shortly.