Talk to Sam Kim at the Rowland Heights location. He is the man!
He is a super honest guy. The workers are great, and not your typical shop trying to upsell everything on earth. If they say you need an air filter when you go in for an oil change, you probably actually need it! They are quick and really good about time estimation. Hate it when a mechanic tells me 30 minutes and it turns into 3 hours.
(This testimonial originally appeared on Yelp.com.)