Car Warranty: Do you need dealer's service?

While buying a new car, some dealers might tell you that you have to
get the recommended service items regularly done 'at their shop' to
keep your warranty in effect. The subtly-forwarded incorrect part of
this statement is 'at their shop'. You do not need to follow this, if you
do not want. You can get service done anywhere; you can even do it
yourself. Just keep records and receipts, should any questions arise
over a warranty claim.

The part of the statement which holds true and you must keep in mind
is that: If you do not follow the scheduled maintenance like oil changes
and filters at recommended intervals, that can void a warranty.