People can purchase motor oil online at AdvanceAutoParts.com and TractorSupply.com, as of 2015. Each website offers several types and grades of motor oil that are designed for cars, trucks and other vehicles.
AdvanceAutoParts.com offers motor oil from makers such as Castrol, Pennzoil, Havoline, Quaker State and Valvoline, in types such as 10W-30, 10W-40, 30W and 5W-20. The site allows visitors to sort available motor oils alphabetically, by ratings or by most popular, and offers customer reviews. TractorSupply.com offers motor oil from makers such as ALCO, Shell, Massimo, Pennzoil and Castrol and allows visitors to search for oil by brand, type, rating and price. Buyers can view reviews as well as details and specifications for different oils on the website.