10W-30 vs 15W-40 Motorcraft Diesel oil. I just changed oil at 4000 miles, 2000 mile towing a 14,000 lb 5th wheel in Florida. I wanted to get out any break in wear metals. Oil cap states to use 10W-30 for normal driving or 5W-40 for severe duty. I read the new blurb from Ford about only using spec WSS-M2C171-F1.
No difference between 10w-40 and 15w-40 in terms of how well it will look after your engine except at startup. The 15w and the 10w just refers to how thick the oil is when cold. Once warmed up both oils are the same viscosity i.e. look after your engine just as well. Nissan specified 7.5w-30, so a 40 weight oil is better for a hard pressed
Jul 11, 2010. #9. Actually, Syntec 5W-50 is a pretty good oil, with very low use of VIIs, of which Castrol was quite proud. Anyway, to the OP, for ARX, use the cheapest API SL or SM you can find. A 15W-40 HDEO is fine around here (I live about halfway between Cinti and Dayton, and about halfway between Middletown and Hamilton) during the months
15W-40 A P I Conserving” oils may result in an overall savings of fuel in the vehicle fleet as a whole. S E R V I C E C C K - 4 , CJ-4, I-4, gasoline-engine cars, vans, and light trucks. Widespread use of “Resource C H-4 / S P SAE 10W-30 A P I-S E R V I C E F A 4 The API Service Symbol, also known as the “Donut” 1.
The oil is graded based on the coldest temperature the oil is at, as SAE viscosity grade 0W, 5W, 10W, 15W, 20W, or 25W. The lower the viscosity grade, the lower the oil temperature. For example, if an oil passes specifications for 10W and 5W but fails for 0W, you must label the oil as SAE 5W.
Fellow Texans know if you regularly drive on I-35,80mph is the nominal average cruising speed if you don`t want to get run over. As per Z32 fsm,10W40-20W50 is recommended if the car is driven fast,raced,or in driven in hot climates,and 10W30 is recommended for fuel economy only.
The motor oil’s cold viscosity is essential because it will dictate the lubrication. For example, a 10w40 motor oil will be a lot thicker at startup than the 5w30 motor oil. This means that the 10w40 motor oil will cling to the engine’s moving parts more than the low viscosity of the 5w30 motor oil.
Mar 9, 2016. #4. The 10W-50 should burn less oil. Its thermal stability should be better than a 15W-40 and it being an SAE 50 should prevent more exchange between the crank and the cylinder than an SAE 40 would, thereby limiting the amount of oil getting into the combustion chamber. 4.
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difference between 10w and 15w oil