Corporation vs LLC

I have a followup question, regarding monthly bills. I understand expenses such as gas, food, and parts & services should come out of the business account. However, I set up his monthly Volvo truck payment to withdrawal from our personal account, along with the mortgage and household bills. I figured some of our monthly bills are tax deductible, so I assumed I should keep those bills together.

All of our monthly bills for home and business are assigned to a personal account which is funded by the business. Would this be correct, or does his monthly truck payment need to be assigned to the business account?

Thanks

 

Thanks.