Part Type: Engine Coolant Reservoir. 2010 Buick Allure Engine: 2.4L L4; Position: Front;. 2010 Buick Allure Engine: 3.0L V6; Position: Front;. 2010 Buick Allure Engine: 3.6L V6; Position: Front;. WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.