Here is what GM says, and Ford will say the same:quote:Originally posted by Trajan:
And Ford, et al, doesn't require an UOA for warranty. All they require is that you follow said warranty conditions.
“The New Vehicle Warranty would not be void simply because an owner failed to use proper engine oils or did not perform maintenance at the prescribed intervals. Warranty applicability is contingent upon the cause of failure.”
Service Policies and Procedures Department,
General Motors Corporation “