Surfer Bill

if you are looking for an air filter then I use these products to help gas mileage: https://www.searchforparts.com/oil-change/toyota-2013-highlander-2.7l-1ar-fe (if you have a 2.7L) https://www.searchforparts.com/oil-change/toyota-2013-highlander-3.5l-2gr-fxe (if you have a 3.5L) also here are some roof racks that are worth looking at: https://www.carid.com/2013-toyota-highlander-roof-racks/ hope this helps!

look in the manual, I doubt it is 3000 miles, that is from way back in the day to make Jiffy Lube money. Most vehicles are 5000+ unless you are using a low quality conventional oil "Synthetic oil usually should be changed every 7,500 - 10,000 miles. Toyota recommends getting your 2018 Toyota Highlander oil & filter changed every 3,000-5,000 miles for conventional oil." taken from https://www.courtesytoyota.com/2018-toyota-highlander-oil-change.htm#:~:text=Synthetic oil usually should be,5%2C000 miles for conventional oil.

Hi, I stopped going to the dealer and I use this for my 2.5L 2016 Camry https://www.searchforparts.com/oil-change/toyota-2016-camry-2.5l-2ar-fe the dealer refused to put it in so I either do it myself or order and take it to my local mechanic. I don't try other oil weights except for what is recommended for the Camry in the manual. I use this oil because I only change it 1 time per year, been doing it since 2005 when I had a 2001 Camry that was burning up oil for no reason and this synthetic oil solved the issue.