Great service. I came in unannounced and Zylstra fit me in. I needed a smog check for my diesel truck. The truck had a poor glow plug so I had them replace all of the glow plugs on the one side. They stayed with the truck until the job was done. Thank you Zylstra!!! All of the people there were cheerful and informative. The also have a record of all the times I have had service performed on my 12 year old truck and what was done on it. - Donald S (5 star review found on Surecritic)