Put a set of fuel filters and 1/8" or braided fuel return line in the trunk with tools to change and go. Add a set of hand tools if you're worried. Perhaps oil and trans fluid if you have leaks. Going 8,000 mi between wrenching is common.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.