NEW YORK - Exxon Mobil Corp's idled 115,000 barrel-per-day gasoline-making fluid catalytic cracker will likely be down for nearly two months for planned maintenance at its 562,500 bpd Baytown, Texas, refinery, traders said Wednesday.

A company spokeswoman declined to discuss the duration of the work on the unit, which began shutting on Tuesday, according to a company announcement that day.

Oil traders said the largest U.S. refinery may keep the unit offline for about 60 days of maintenance.

I think (work will last) 60 days, said one Gulf Coast cash oil trader, seconding views from other market players.

Exxon officials say customers' needs will be met during the unit's outage but declined to discuss turnaround specifics.

We never discuss duration of turnarounds so can't provide any information to that effect, Neely Nelson, a spokeswoman for the refinery, told Reuters in an email. (Reporting by Haitham Haddadin; editing by Jim Marshall)