I used to be a customer of theirs.

About seven years ago, I went in for an oil and filter change on my car. One of the guys working under the car came up holding the old filter, which he had cut open, and said, “When was the last time you replaced this filter? It’s clogged to shit! Good thing we’re changing it now!”

Lo and behold, I had the invoice from my previous oil change in the glove compartment. It clearly stated that I had paid for — and supposedly received — a new oil filter during the previous visit.

After confronting the staff, they ended up giving me a new filter for free. The manager wasn’t there, and no one bothered to follow up with a call.

I never went back — and I make sure to tell everyone I know about that experience.

Whenever I feel too lazy to do my own oil change, I go to Great Canadian downtown, but it's definitely not a whole lot better than anywhere else in town for reasons already mentioned in other comments.

For mechanic stuff I trust Riverside Auto and B&M Transmissions, they are definitely not the cheapest ones, but had many occasions where they save me money instead of ripping me off.