On the transmission there is no recommended service on it, and I agree. IMHO it's best to leave it alone.

On the engine-related maintenance, at 100,000 miles or 4 years it's due for spark plugs, and remember this is a dual-plug engine.

At 60,000 miles or 4 years it's due for air filter and fuel filter. If the fuel filter is original there is an updated fuel filter which requires quite a bit of extra labor to install the first time.

Gilly