Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
Thanks for asking your question. I can help you with this.
So 1 gallon of antifreeze was added to the engine but the engine was not started with the antifreeze in the oil pan?
If so, I would just change the engine oil once. IF the engine was not started, all the coolant ran to the oil pan. Changing the oil once should be fine.
Please reply back if you need more help or have more questions. I am happy to assist.