Antiellean Marine Shippers Corporation

Valvoline broke a part in my van during a routine oil changeThey described the issue in the guarantee, but are now saying they aren't responsibleI have a dispute with the manager at Valvoline Oil Change storeDuring the process of an oil change to my Volkswagen Routan van on 7-10-a part was brokenIt is my belief that this may have occurred due to over tightening the bolt on the oil filter housingAt any rate, something was over tightened because the unit is damaged to the extent that the check engine light came onMy automotive repair man evaluated the situation and explained that there is now a leak at the location of the crack that is causing the oil pressure to be low and thus be indicated by the check engine lightUltimately the repair will cost $since the broken part alone has a cost $I feel the store is responsible for these chargesThe reason I am so certain they bear responsibility is further reinforced by the wording of a guarantee written on