well, as others mentioned the computer can't figure that out with any accuracy. its just an estimate based on miles and your driving patterns, idleing ect
% really depends on alot of things. Most importantly the quality of oil. Just because it has the API rating doesn't mean its the same as the others. all oils are NOT created equal. FOr example oil additives to control acid are the key item in oil life. Premium synthetics may be up around 12 TBN. Lower grade oils may by 6-8 TBN. HUGE difference in % life of oil. Also depends on the engine. A newer engine is less likely to contaminate the oil as fast as a well worn engine.
I'd change it where you're comfortable. Many new cars have 7-8000 change recomendations.
I run AMSOIL synthetics in my cars and change about once a year. SOme cars run about 10000/year some run up to 25000.
Fast Shipping! Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.