Will this bolt straight into my car, or do I need to modify anything?

This radiator mounts at factory cradle points with no drilling or welding. Bolt it in place and reconnect your upper and lower hoses — they'll line up with the OEM neck positions.

What coolant should I use when I install this?

Use the coolant type specified in your vehicle's owner's manual. Flush the system thoroughly before filling to remove any debris from the old radiator. Your service manual will confirm the correct spec and fill capacity.

Does the transmission cooler section need any special maintenance?

The integrated cooler works passively — no separate maintenance required. Keep your transmission fluid clean and at the correct level, and the cooler will function as designed. If you're seeing ATF leaks from the radiator seams, the unit has failed and needs replacement.