If you don't want your cars engine to melt into a gob of metal and be unusable. Change the oil every 4 months . Get a new oil filter and a new air filter. You'r vehicle needs clean air as well as clean oil.
Always use high mileage oil. High millage oil has seal conditioners, the modern vehicle has seals all over the place. Replacing seals cost lots of money. Using high millage oil with seal conditioner cuts down on having to replace oil seals.
Do Online Defensive Driving in Texas on Your Cellphone , Tablet or Computer. Because it's Easy, Fast and Super Cheap You don't need a Computer (Unless you have one) a Tablet or Cellphone will work ! Use your Cellphone ! You just need Internet a and a Web Browser :)