The oil has additives to minimize deposits and dissipate heat.
Brad's Deals Editor Jim,
This 5-quart jug of Valvoline 5W-30 Synthetic Oil listed at $56.99 and was on sale for $24.92, but you can get two jugs (a total of 10 quarts) for $47.34 when you add them to your cart at Jet.com. Shipping is free on orders over $35, otherwise it adds $5.99. The 5-quart jugs usually sell for $37 or more each, and this is the best price we can find anywhere by about $4. The oil has additives to minimize deposits and dissipate heat. Note: New customers can use the code SAVE15 during checkout for an extra discount. Sales tax is charged in most states.