* E85 is a flex fuel. This means it's designed for vehicles specifically built to run on a blend of 85% ethanol and 15% gasoline.
* Your 1999 Cadillac was not likely built for flex fuel. Flex fuel technology didn't become widespread until the mid-2000s.
* Using E85 in a non-flex fuel vehicle can cause serious damage. Ethanol can corrode certain engine components, and the fuel mixture is not compatible with older fuel systems.
How to Check if Your Cadillac Can Use E85:
1. Look for the "E85" badge or sticker. Flex fuel vehicles will have this clearly displayed on the gas cap, dashboard, or the fuel filler door.
2. Check your owner's manual. It should specify what fuel types are acceptable for your car.
3. Consult your Cadillac dealer. They can provide accurate information about your car's fuel compatibility.
It's crucial to only use the fuel type your car's manufacturer recommends. Using the wrong fuel can lead to engine damage and costly repairs.
