In addition to an oil change at 10000 miles, what else is recommended for maintenance? THis is for IS250

Every 7 months change oil it's better

if you are talking about sludge and the like
use diesel engine oil --say --shell rotella 20w40 as the engine oil( same oil but with more detergent additive )
change the oil filter around every 1000 miles for starters can block easily and the oil every 3000 miles for the first 10000 miles after that oil change every 5000 miles along with the filter change

I switched to a full synthetic oil, and never looked back. You can get 10000 miles out of full synthetic easily. Some people say you never have to change it, but i go 10000 and have for 90,000 miles and still runs smooth as the day i bought it. Castrol Syntec is a very good synthetic oil.

First to check with OBD codes reader, this is one advise to fault; when you have this number (code) the clues for solve the problem are more.

Try it, comment and rated this.

10000 km unless driving in dusty conditions then 5000 km

You should change it at least every 3,000miles or every 3 months, whichever comes first. The more often you change your oil, the longer your engine will last.

The best oil for any car is 5W-30 synthetic, I personally recommend Mobile 1. 5W-30 Synthetic flows more rapidly to engine parts thereby reducing "dry start" wear. In addition, full (not part) synthetics contain fewer additives (they don't need them) than conventional oils. Conventional oil additives "burn off" rapidly (500-1000 miles) after an oil change and sludge accumulates over time as a result.

Synthetic oils use much less of these additives (5% vs 20-30%) than conventional (Dinosaur oil) so there's much less sludge to build up. Synthetic oil also has a more uniform molecule size, this extends oil longevity and reduces running temperature.

I've personally used Mobile 1 for many yeas in my cars and would recommend it although I'm quite sure that other FULL synthetics would offer similar benefits.

FUEL FITER , AIR CLEANER , OIL FUILD AND FITER , TRANS FITER AND FLUILD CHECK REAR END OIL AND BRAKES ALSO TIMING BELT WOULD BE VERY GOOD TO CHANGE OUT