2006-08-30 14:51:30 · 4 answers · asked by seunghan1980 1 in Cars & Transportation ➔ Maintenance & Repairs
The 5W-20 weight is a synthetic blend from Motorcraft, designed to be used in the newer model Ford vehicles. The 5W-30 from Motorcraft is a conventional oil. The newer engines from Ford have very close tolerances, the synthetic blend is used for this purpose, and over the life of millions of vehicles produced and using 5W-20 weight oil since it's start in 2001, a lower fuel consumption average was noticed when compared with 5W-30.
This was part of a bulletin distributed to us Ford technicians, after 5W-20 became a standard motor oil for Ford.
2006-08-30 16:57:30 · answer #1 · answered by yugie29 6 · 0⤊ 0⤋
Viscosity 5 weight as the low when the engine is cold the 20 and 30 is the high when the engine is warm. engineers determine the best viscosity for the engine they design that will reduce ware to the bearings.
2006-08-30 15:03:20 · answer #2 · answered by silvercitydog 1 · 0⤊ 0⤋
The Thickness of the Oil is Different.Warmer weather you should run a thicker oil because the engine will run hotter & the oil breaks down quicker which will wear out the moving parts inside your engine faster.
2006-08-30 14:57:48 · answer #3 · answered by sugarbdp1 6 · 0⤊ 1⤋
5W-30 is slightly thicker than 5W-30. A thinner oil will give you better fuel mileage a thicker oil will generally give better wear protection... to a point.
2006-08-30 14:55:58 · answer #4 · answered by lowrider 4 · 0⤊ 1⤋