If you have a gas credit card from Tesoro, then be advised that a higher octane credit card may be on the way. Tesoro Petroleum announced last week it is dropping its proprietary gas card at the end of this year, switching to a MasterCard issued by Juniper Bank. The new “Tesoro Platinum MasterCard” rewards cardholders with a Tesoro gift card each time they accumulate $20 in rebates. Under the program, cardholders earn a 3% rebate on purchases at Tesoro branded locations, and a 1% rebate on all other purchases. During the first two months after an account is opened, cardholders will earn double rebates for every purchase. The no-fee card also features a 0% introductory rate on balance transfers for 6 months and a 12.99% variable go-to APR. Juniper has already started issuing the new MasterCard to current, creditworthy, gas cardholders and will now accept applications from the general public. Tesoro’ has 560 branded retail stations, of which over 220 are company operated under the Tesoro and Mirastar brands. For more information visit: www.tesoropetroleum.com.