Several questions about oil.

zepherman · 08-02-2002, 12:04 AM

Ok, i have some questions about oil and the people i have talked to recently dont have a clue what thier talking about so i was hoping that someone here could give me some answers.

What do the numbers mean as in 10w-30? I know the 10w means that it is a 10 whight oil, but how exactly does that compare to other oil weights like 20w-50.

What does it mean when there is only one number.

How do you pick the right oil for your car?

What oil is best for performance engines.

Thanks, and i hope that this will answer questions that others might have too.

SlowGT · 08-02-2002, 08:57 AM

Here's some sites that should help you out. Just copy and paste them in the address bar if they don't showup as clickable links.

http://www.motoroilbible.com/index.html

http://api-ec.api.org/about/index.cf...02003002000000

http://www.performanceoiltechnology....ubrication.htm

http://www.vtr.org/maintain/oil-overview.html

http://www.howstuffworks.com/question164.htm

http://api-ep.api.org/filelibrary/ACF28.pdf

LX5liter · 08-02-2002, 05:32 PM

The W after the first # is the "winter" weight, which is the viscosity of the oil in colder temps (there is a certain temperature they use as a benchmark, but I forget what it is). The second # is the "hot " weight, which is what the viscosity is at higher temps. Viscosity simply means "resistance to flow" and the higher the #, the thicker the oil. Two #'s together (10w-40) means a multi-grade oil. A single# (50w) is a straight grade oil which means its viscosity does not change when hot.

egiap's 5.0 · 08-03-2002, 07:59 AM

Visit www.lubedealer.com/midohio and from there you can go to Amsoil's web site. You can find out everything you want to know. Take a look at preferred customer program and buy at wholesale prices. Series 2000 0W-30 oil is reommened for all cars requiring 5W-30 or 10W-30 motor oil. Good luck.

08-02-2002, 12:04 AM	#1 (permalink)
zepherman Registered Member Join Date: May 2001 Location: Oklahoma City OK USA Posts: 236	Several questions about oil. Ok, i have some questions about oil and the people i have talked to recently dont have a clue what thier talking about so i was hoping that someone here could give me some answers. What do the numbers mean as in 10w-30? I know the 10w means that it is a 10 whight oil, but how exactly does that compare to other oil weights like 20w-50. What does it mean when there is only one number. How do you pick the right oil for your car? What oil is best for performance engines. Thanks, and i hope that this will answer questions that others might have too. __________________ 90 GT 25th Anni. Did the AOD to T-5 swap, SPEC clutch, Steeda Tri-Ax shifter, BBK 2½ inch off-road H pipe, Flows, BBK 70mm TB/EGR, Ford Racing aluminim driveshaft, 3.55's, welded subframes, Ram Air, 3 core radiator, NOS dry kit 75 shot, and a K&N filter. 12.9 @ 108

08-02-2002, 08:57 AM	#2 (permalink)
SlowGT Registered Member Join Date: Jun 1999 Location: Columbia Co, PA Posts: 301	Here's some sites that should help you out. Just copy and paste them in the address bar if they don't showup as clickable links. http://www.motoroilbible.com/index.html http://api-ec.api.org/about/index.cf...02003002000000 http://www.performanceoiltechnology....ubrication.htm http://www.vtr.org/maintain/oil-overview.html http://www.howstuffworks.com/question164.htm http://api-ep.api.org/filelibrary/ACF28.pdf __________________ OldSlow GT NewSlow GT-->under construction Info PICS Latest Addition: 92 5spd Notch - 33k miles Bone stock (with air silencer & spare tire) 14.94 @ 94.2

08-03-2002, 07:59 AM	#4 (permalink)
egiap's 5.0 Registered Member Join Date: Apr 2001 Location: Mansfield, OH. Posts: 113	Visit www.lubedealer.com/midohio and from there you can go to Amsoil's web site. You can find out everything you want to know. Take a look at preferred customer program and buy at wholesale prices. Series 2000 0W-30 oil is reommened for all cars requiring 5W-30 or 10W-30 motor oil. Good luck. __________________ Amsoil, The finest in synthetics T-1 certified Amsoil dealer Oils,Lubes,Filters www.lubedealer.com/midohio

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08-02-2002, 05:32 PM	#3 (permalink)
LX5liter dude5l Join Date: May 2001 Location: Grande Prairie, Alberta, Canada Posts: 603	The W after the first # is the "winter" weight, which is the viscosity of the oil in colder temps (there is a certain temperature they use as a benchmark, but I forget what it is). The second # is the "hot " weight, which is what the viscosity is at higher temps. Viscosity simply means "resistance to flow" and the higher the #, the thicker the oil. Two #'s together (10w-40) means a multi-grade oil. A single# (50w) is a straight grade oil which means its viscosity does not change when hot.

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