The only way that 100,000 might be recommended is if the oil was changed at say 10,000 assuming most of the stuff was created during break in and then maybe it could go for 100,000 but I doubt it.
I changed mine at about 67,000 miles and didn't think of sending the oil off to be tested till after it had already been dumped in with dirty ICE oil.
I think I will test mine around 25,000 and I bet they will say it's fine.
I'm picked 25,000 because that's usually around the traditional automatic transmission oil change. I bet leaf oil could go about 50,000 on its factory fill. Second fill at least 50,000.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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