What type of forms to submit to represent your vehicle logbook

When asked to submit your logbook to SARS, can I use the petrol claim forms for the starting and ending month of that financial year or should I include all the months?

What petrol claim forms are you referring to?

Its on a spreadsheet that the Admin lady fills in with our names surname date and client with starting odometer and ending odometer for that trip. (business only).

Will this suffice if I use the month of March 2014 and then February 2015 or do I need to send all 12 months to SARS?

You would need to send all 12 months to SARS unfortunately.