It needs a tune-up but you might oughta {have/get) a major tune-up/major maintenance.

source: 
DiPaolo
Entry: 
1348
Example: 
It needs a tune-up, but you might oughta get) [one].
Modal 1: 
might
Modal 2: 
ought to
Gender: 
Male
Race/Ethnicity: 
White
Age: 
unknown
Level of Education: 
Unknown
Home Community, Town, or State: 
Unknown
Location Collected: 
TX (Austin, on phone)
Year: 
1980
Relation to Addressee: 
man to man
Medium: 
Spoken
Sentence Structure: 
1.1
Status: 
Naturalistic