NASCAR O'Reilly Series

NASCAR at Charlotte Coca-Cola 600 Weekend Schedule

NASCAR travels to Charlotte Motor Speedway this weekend. All three national series will compete, culminating with the iconic Coca-Cola 600 Sunday evening.

Corey Day rallies for second career O’Reilly victory at Dover

The 20-year-old Day from Clovis, California, led the final four of 200 laps and overtook Justin Allgaier amid a late battle to notch his second O'Reilly Auto Parts Series career victory at Dover.

Ross Chastain snaps eight-year O’Reilly poleless streak at Dover

The 2025 Coca-Cola 600 champion from Alva, Florida, posted a qualifying lap at 154.394 mph in 23.317 seconds for his first O'Reilly Auto Parts Series pole since Darlington Raceway in September 2018.

NASCAR at Dover All-Star Race Weekend Schedule

The NASCAR All-Star Race will headline the weekend racing at Dover Motor Speedway at 1 p.m. ET on Sunday, May 17 on FS1, MRN and SiriusXM NASCAR Radio.

Parker Retzlaff extends strong start in 2026 with seventh top-10 result at The Glen

The 23-year-old Retzlaff from Rhinelander, Wisconsin, is off to a career-start by notching seven top-10 results through 13 events of the 2026 O'Reilly season.

Connor Zilisch overtakes Jesse Love on final lap for third consecutive O’Reilly victory at Watkins Glen

Connor Zilisch remains undefeated in the NASCAR O’Reilly Auto Parts Series at Watkins Glen International for a third consecutive year.

Rajah Caruth awarded pole position for O’Reilly event at Watkins Glen

The 23-year-old Caruth from Washington, D.C., was awarded the pole position for Saturday's event at Watkins Glen International based on a qualifying metric formula and due to rain canceling Saturday's on-track qualifying session.

Watkins Glen shifts to September for 2027 NASCAR season

The Glen shifts to September for the 2027 NASCAR season ahead of this year's on-track festivities in May.

NASCAR at Watkins Glen Weekend Schedule

NASCAR travels to Watkins Glen International for a full schedule of racing this weekend.

Ryan Preece fined, docked points after on-track incident with Ty Gibbs at Texas

A $50,000 fine and a 25-point dock for Ryan Preece highlights the penalty report from this past weekend's triple-header weekend of racing at Texas Motor Speedway.

The Latest

23XI Racing Welcomes John Klausmeier as Technical Director

23XI Racing announced today that John Klausmeier, a veteran NASCAR crew chief and engineer, will join the team as its first technical director starting with the 2027 season.

TPC Racing Returns to Daytona Celebrating a 20th Anniversary Rolex 24 Porsche Win and Helping Ford Honor our Nation’s Veterans and U.S. Armed Services

Michael Levitas Races the No. 36 TPC Racing Porsche 911 GT3 Cup at the HSR Daytona Historics 20 Years After Milestone Rolex 24 At Daytona Victory

DPF, SCR, or EGR? Figuring Out What’s Actually Causing the Derate

Learn how to tell if a DPF, SCR, or EGR problem is causing your diesel truck derate. Spot the warning signs, fault codes, and patterns that point to the real issue.

How Remote Truck Programming Actually Works with an RP1210 Adapter

Learn how remote ECM programming works using an RP1210 adapter. See the equipment, connection steps, and prep tips for a smooth heavy-duty truck session.

Marine Diesel Engines: Why Software Optimization Matters for Commercial Vessels and Yachts

Marine diesel software optimization for commercial vessels and yachts: improve engine performance, reliability, and calibration.
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