DIY car maintenance, engine builds, wrenching guides, tool recommendations, and repair walkthroughs for owners who do their own work.
AAA tested synthetic vs. conventional oil across eight benchmarks. Synthetic won by 47%. But 30% of cars don't need it. Your owner's manual has the answer the oil change shop won't give you.
James Morrison·12 min read
Maintenance & DIYYou can build a 400-horsepower Chevy LS motor for between $1,800 and $3,200 in parts if you start with a junkyard 5.3L or 6.0L iron block.
James Morrison·10 min read
Maintenance & DIYFree LS engines still exist in 2026, but they take more hustle to find than they did five years ago when junkyards were practically giving them away.
James Morrison·9 min read
Maintenance & DIYCostco Tire Center sells quality tires with the best road hazard warranty in retail. The appointment system is broken beyond belief. Here is the full truth.
James Morrison·12 min read
Maintenance & DIYMost aftermarket wings on street cars generate zero functional downforce at legal speeds and add enough drag to hurt your fuel economy.
James Morrison·10 min read
Maintenance & DIYAftermarket cold air intakes on stock naturally aspirated engines produce 1 to 5 horsepower at peak RPM. On the street, most of them actually lose power.
James Morrison·12 min read