ok 5w 30 or 10w 30 ?
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From: Washington State, Car: 2000 Impreza Coupe RS-T T
Car Info: 2000 Impreza Coupe RS-T Tec3/Vishnu turbo Color: B
depends on what temps are in your area. If you never start the car below 30F than 10w would be fine. If it gets colder than you need the 5w.
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I took an ASE class in college once, and my instructor mentioned that the thinner oil (5w) is used in newer cars because they are machined to much tighter tolerances, so a thinner oil is required to get into all the little nooks and crannies. So, I think that the weight you chose for your area may be pretty important. Course, the difference in weight is only important when the engine is cold. So, after all that BS, I think I would have to agree with David2z4. =D
-Andy
-Andy
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cold out in NJ
yeah it gets cold in New Jersey during the winters so I guess I am doing good by using Mobile one syn 5w-30 all year maybe in the summer If I want I could change it too 10w-30 thanks ohh one more thing I left a question in the Car Lounge section about oil again
Thanks all
Thanks all
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From: Bay Area
Car Info: 02 WRX wagon=dead; rollin' in a Craptastic Camry!
Originally posted by RallyImprezive
I took an ASE class in college once, and my instructor mentioned that the thinner oil (5w) is used in newer cars because they are machined to much tighter tolerances, so a thinner oil is required to get into all the little nooks and crannies.
I took an ASE class in college once, and my instructor mentioned that the thinner oil (5w) is used in newer cars because they are machined to much tighter tolerances, so a thinner oil is required to get into all the little nooks and crannies.
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Right, thats why I said the rating is only important when the engine is cold (cold starts). 5w 10w ect. is a viscosity rating based off SAE standards. The W suggests that the oil is formulated for cold weather use. The W stands for "winter" and meets the requirements for temps below 30F. The next number represents the relative SAE viscosity when the oil is warm. Since the motor oil we use is 5W-30, this is a multi-viscosity oil which has special polymeres that make the oil act like SAE 5W when cold and SAE 30 when warm. SOOO, get 5w-30 and smile.
-Andy
*edit* And my comment stating that the 5w is better for new cars still holds true, a cold engine will be able to get the 5w through the engine better than 10w. If you bought an older sloppy FORD engine or something, the owner's manual probably recommends a higher viscosity to help fill in all the imprefections in the machining work and create a smoother engine.
-Andy
*edit* And my comment stating that the 5w is better for new cars still holds true, a cold engine will be able to get the 5w through the engine better than 10w. If you bought an older sloppy FORD engine or something, the owner's manual probably recommends a higher viscosity to help fill in all the imprefections in the machining work and create a smoother engine.
Last edited by RallyImprezive; Nov 27, 2002 at 11:20 AM.
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From: Bay Area
Car Info: 02 WRX wagon=dead; rollin' in a Craptastic Camry!
No offense taken, my RallyImprezive!
The only thing I might add, is that the larger the difference between the first number and second number, the more readily the oil breaks down due to more additives (polymers). This is less of an issue with synthetic oil, but something to consider nonetheless.
Moral of the story: change your oil often!
The only thing I might add, is that the larger the difference between the first number and second number, the more readily the oil breaks down due to more additives (polymers). This is less of an issue with synthetic oil, but something to consider nonetheless.
Moral of the story: change your oil often!