Convert your Excel data to CSV format.
Note: You can skip this step if you already have a .CSV file.
Use the on-line CSV Import Tool to import your CSV Data.
Note: The import tool will try to guess the contents of each column based on the labels in the first row of data.
Note: Only the "Odometer", "Date", and "Fill Amount" columns are required; all others are optional. Columns that are not identified will be ignored.
If the data was imported correctly, "Step 3." will appear, and will contain a link that contains your CSV data.
Copy the link generated by the import tool, email the link to your iPhone, then click the link from your iPhone.