Service
Maintenance Schedule Builder
Mileage, drivetrain and duty cycle into a printable 30/60/90 service card.
OpenMAINTENANCE
MAINTENANCE & DIAGNOSTICS
3 tools, 5 guides and 3 comparisons — 11 pages in all
Service intervals worth quoting, inspection sheets worth handing over, and the diagnostic codes that walk in the door most often.
Tools
Inspection
Vehicle Inspection Checklist
An editable multi-point sheet with pass, attention and fail columns.
OpenInspection
Pre-Purchase Inspection Checklist
The buyer-side sheet, with a walk-away column that names the deal-breakers.
OpenGuides
Service
7 min
Oil Change Interval
Conventional, blend and full synthetic bands, plus time against mileage.
Service
6 min
Oil Change Price
What the service costs by oil type and shop type, and what the upcharges are.
Diagnostics
9 min
Check Engine Light Codes
Solid against blinking, the read-then-diagnose order, and the common codes.
Diagnostics
8 min
P0420 Code Explained
What sets catalyst-efficiency-below-threshold, and what it is not.
Diagnostics
9 min
Right to Repair Law
The Massachusetts laws, the 2014 MOU, warranty rules and the REPAIR Act, dated for independent shops.
Comparisons
Parts
OEM vs Aftermarket Parts
Where the difference is real, where it is marketing, and what it costs.
Parts
Remanufactured vs New Alternator
Reman, rebuilt and new: warranty, core charge and failure risk.
Service
Tire Rotation vs Wheel Alignment
Two tire services that fix different problems: symptoms, intervals and what the alignment rack measures.