Is it only about tempareture?
But I heard 10W-30; 10W-40; or 15W-40 are more better than 20W-50 ? Is it true? How it is calculated?
My car specification demands 20W-50 grade engine oils. My city's tempareture runs between 15C to 40C. Is grades like 10W-30; 10W-40; or 15W-40 more good for my car in anyway?
2007-11-10 08:14:39 · 10 answers · asked by Tazul 1 in Cars & Transportation ➔ Maintenance & Repairs
20 watts and 50 miles per hr.
2007-11-10 08:17:39 · answer #1 · answered by Anonymous · 0⤊ 5⤋
The W following the first viscosity means winter (cold starts). The second viscosity grade in your case is 50. This viscosity is after the motor's reached full operating temperature. In other words a Miltie-grade (viscosity) oil.
It would be neat to know what year, make and model your car is. Mobil has a free identification chart which pin-points the oil viscosity your car should have. I find it hard to believe that any modern car company would stick in such an inefficient motor oil. The oil pump has to work very hard to pump 50 weight motor oil. During cold starts the higher the viscosity the longer it takes the oil to reach critical engine parts. This is where 80% of engine wear occurs.
Check out Joe Gibbs Racing oil to find the grade and tyoe of oil used on their engine dynomometers, qualifying, when restricter plates are used and when the suffocating plates are not used
2007-11-10 09:29:37 · answer #2 · answered by Country Boy 7 · 1⤊ 0⤋
W is for winter you are correct. The SAE designation on motor oil refers to the viscosity standards set by the Society of Automotive Engineers The first number rates the viscosity of the oil at a temperature of 0 degrees F, The second number repeats the test at 210 degrees F. Lower first number mean the oil is thinner in cold temperatures. The W designator was added in 1952 due to new formulations of oil.
2016-04-03 06:08:21 · answer #3 · answered by Anonymous · 0⤊ 0⤋
If the specifications call for 20w50, then run it.
With your city as warm as it is, you will never need to run the thinner oils. 20w50 never will get cold enough to not run correctly.
My home varies from -24C to 35C, and I would never be able to run a 20w oil in the winter. It wouldn't even pour out of the container at that temperature.
2007-11-10 13:39:01 · answer #4 · answered by W_Howey 4 · 1⤊ 0⤋
If the recommended oil for your car is 20w50 that's cuz the manufacture did tests and the results for your car were better with 20w50 oil. If you're concern about cold starts then find a 10w 50
2007-11-10 08:19:27 · answer #5 · answered by ASE_mechanic 4 · 1⤊ 2⤋
country boy has it right
if your car is a 1995 or newer most likely it will require 5-30
most newer cars have tighter tolerences and need the thinner oils to lube them properly
some are useing 5-20 and 0-30 these days
2007-11-11 01:41:01 · answer #6 · answered by 51 6 · 0⤊ 1⤋
20 refers to the thickness. 20w being a thinner oil, helpful in cold weather. 50 refers to the thicker oil protection, helpful in warm weather.
2007-11-10 08:25:06 · answer #7 · answered by badbill1941 6 · 0⤊ 2⤋
this can be answered by wiki dude. . but w stands for the weight of the oil. . the higher the thicker. . . heavier in summer n lighter for winter for optimal performance. . **** it go synthetic n ur covered all year. . . look at the manual . . or the tag on the side of the driver door. . n follow it
2007-11-10 08:20:44 · answer #8 · answered by b3nzin 3 · 0⤊ 1⤋
I use 20w 30 in warm weather and 20w40 in cold weather if that helps.
2007-11-10 08:19:16 · answer #9 · answered by Sugar 7 · 0⤊ 4⤋
what kind of car
2007-11-10 08:17:52 · answer #10 · answered by Gustove 3 · 0⤊ 2⤋