Go to the Globe and Mail homepage

Jump to main navigationJump to main content

(Nati Harnik/AP Photo)
(Nati Harnik/AP Photo)

You & Your Car

Is the gas at the discount station safe for my car? Add to ...

My neighbour, a car nut, says I should stop using gas from the discount place near our subdivision, that I should be using something called Top Tier gasoline. What is that and is he right? – Howard

About 20 years go, the U.S. Environmental Protection Agency (EPA) established minimum standards with respect to the detergent levels in gasoline. The new standards actually allowed lower levels of the detergents put in the fuel at the refinery according to specifications established by the retailer. They are critical to preventing the build-up of deposits on internal engine components like valves, injectors and spark plugs.

More Related to this Story

Fearing the consequences, including warranty costs, should customers use gas with the lower level of detergents from off-brand or discount gas stations, Audi, BMW, GM, Honda, Toyota and Volkswagen recommend what is known as Top Tier gasoline containing the suggested higher level of detergents. In Canada, that means Chevron, Esso, Petro-Canada and Shell. It’s unlikely the discount place would have access to and be willing to pay extra for Top Tier gas.

Send your automotive questions to globedrive@globeandmail.com

In the know

Most popular video »

Highlights

More from The Globe and Mail

Most Popular Stories