Petrol Reimbursement Exemption

Dear Sir ,

I am Anoop Jain,

I have one query, Kindly request to solve.
I work in Pvt.Ltd.Company. And 
Company Pay Petrol Reimbursement to the Director of Rs. 3000/- per month. i.e36000/- in a year.

1. So 36000/- is fully exempted or not in income tax.

2. And what is the threshold Limit on Petrol Reimbursement?

Thanks and Regards