Newton-John was caught up in an accident on lap 5 with several other cars and didn't get to show the potential in the race had shown in practice and qualifying.
"Indy was definitely an emotional deal for me," he said. "To be back in a car after so long and to be back at Indy of all places was incredible, but to only make it four laps due to being caught out in someone else's mistake, was a massive blow.
"We had been so fast in practice and qualified really well. I honestly felt like I had never been away from the sport. At Indy, people only got to see what I was capable of during practice and qualifying, but I didn't get that chance in the race. I'm definitely looking to change that in Baltimore, and give my boys at FFU a well-deserved strong result."
The team, co-owned by former IZOD IndyCar Series competitor Tyce Carlson and his business partners Chris Williams and Scott Williamson, fielded USAC standout Bryan Clauson in the oval race at Milwaukee and Iowa after Armaan Ebrahim left the team in June.