u/BrianBerimbolos

I have a 2013 ram 1500 with 5.7 Hemi with 184000 KM ( Canada ) . I bought it in 2014 with 77000 km . I've never changed the spark plugs. I talked to a shop about it and they said they can try but if a plug snaps it's gonna be a nightmare for me. How likely is this to happen? Can I spray pb blaster or something on them for a few days to loosen them up?