Any major brand it fine. I personally use Pennzoil.
5w20 any major brand.
The 2003 Buick Regal runs on regular unleaded.
any name brand 5w30
Depends on the brand. AC/Delco is PF457G
SAE 5w20 any major brand.
You can use PH3593A which is a Honda oil filter. There are also other sizes you can use that will fit but they are the Honda brand.
The kind of oil that is recommended for a 2003 Toyota Highlander is 5W30. The brand isn't that important, it is just important that you use the correct weight for your vehicle.
Any major brand is fine as they are all good. More importantly is to use the correct weight.
Depends on the year. 2003 and up use 5w20 oil any major brand. Look in your owner's manual or on the oil fill cap.
5w30 when its cold and 10w30 when its warm
5w20 weight. The brand you use is your choice. I personally use Pennzoil but all major brands are good.
The best oil you can use in your vehicle is the oil that is recommended by the manufacturer. Use that weight oil and no other way. The brand of oil you use is your choice. Just pick a name brand oil as they are all excellent lubricants.