oil
3rd Gear Member
Joined: Jul 2007
Posts: 877
From:
RE: oil
How many miles are on the motor and what is the climate like where you live? For most applications a good 10-40 will work very well, but if you live in a place with cold winters go with 10-30. I like true synthetics, but that that is not a good choice for a motor with lots of miles on it.
5th Gear Member
Joined: Jun 2006
Posts: 4,089
From:
RE: oil
You don't have a grasp of what these numbers mean.
The first number isn't the real viscosity, only the simulated viscosity at cold temperatures. How well the oil flows. The second number is the actual weight of the oil. A 10w-40 oil has the same viscosity as a 20w-40, but the 10w-40 has a larger usable temperature range.
10w-40 for an older engine is fine. How much oil the engine uses will determine which time. If it consumes oil, then stick with the conventionals. If it's a fairly leak-free engine that doesn't use oil, go with full synthetic.
The first number isn't the real viscosity, only the simulated viscosity at cold temperatures. How well the oil flows. The second number is the actual weight of the oil. A 10w-40 oil has the same viscosity as a 20w-40, but the 10w-40 has a larger usable temperature range.
ORIGINAL: 66GTKFB
If you use 10-xxweight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
If you use 10-xxweight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
I ♥ Acer
Joined: Oct 2004
Posts: 17,565
From:
RE: oil
ORIGINAL: 66GTKFB
If you use 10-xxweight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
If you use 10-xxweight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
3rd Gear Member
Joined: Feb 2007
Posts: 551
RE: oil
ORIGINAL: Colorado_Mustang
You don't have a grasp of what these numbers mean.
The first number isn't the real viscosity, only the simulated viscosity at cold temperatures. How well the oil flows. The second number is the actual weight of the oil. A 10w-40 oil has the same viscosity as a 20w-40, but the 10w-40 has a larger usable temperature range.
10w-40 for an older engine is fine. How much oil the engine uses will determine which time. If it consumes oil, then stick with the conventionals. If it's a fairly leak-free engine that doesn't use oil, go with full synthetic.
You don't have a grasp of what these numbers mean.
The first number isn't the real viscosity, only the simulated viscosity at cold temperatures. How well the oil flows. The second number is the actual weight of the oil. A 10w-40 oil has the same viscosity as a 20w-40, but the 10w-40 has a larger usable temperature range.
ORIGINAL: 66GTKFB
If you use 10-xx weight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
If you use 10-xx weight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
All he need to do is run Castrol GTX 20/50 and he will be fine.
I ♥ Acer
Joined: Oct 2004
Posts: 17,565
From:
RE: oil
ORIGINAL: mikethebike
Well, you've got it wrong..the first number is the actual viscosity of the oilat something like 32 degrees and the second number is the high temp viscosity. They add enhancers to extend the range so it does not thin out.
All he need to do is run Castrol GTX 20/50 and he will be fine.
ORIGINAL: Colorado_Mustang
You don't have a grasp of what these numbers mean.
The first number isn't the real viscosity, only the simulated viscosity at cold temperatures. How well the oil flows. The second number is the actual weight of the oil. A 10w-40 oil has the same viscosity as a 20w-40, but the 10w-40 has a larger usable temperature range.
10w-40 for an older engine is fine. How much oil the engine uses will determine which time. If it consumes oil, then stick with the conventionals. If it's a fairly leak-free engine that doesn't use oil, go with full synthetic.
You don't have a grasp of what these numbers mean.
The first number isn't the real viscosity, only the simulated viscosity at cold temperatures. How well the oil flows. The second number is the actual weight of the oil. A 10w-40 oil has the same viscosity as a 20w-40, but the 10w-40 has a larger usable temperature range.
ORIGINAL: 66GTKFB
If you use 10-xxweight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
If you use 10-xxweight in an older car you are asking for disaster. Minimum is 20 as in 20-40.
Jim
All he need to do is run Castrol GTX 20/50 and he will be fine.
2nd Gear Member
Joined: Mar 2006
Posts: 490
From:
RE: oil
If you really want to know about oil, go to:
http://www.bobistheoilguy.com/
Once you wade through the technical stuff, you'll find for classic engines a conventional 10W30 will be fine in most areas, a 10W40 would be good during the summer in the desert, and a 5W30 might be the way to go if you're driving the car in the winter in the north. If you feel the need to go synthetic, you're on your own. This only applies to older engines. More modern engines have more advanced engineering so check your owner'smanual and FOLLOW THE DIRECTIONS!
http://www.bobistheoilguy.com/
Once you wade through the technical stuff, you'll find for classic engines a conventional 10W30 will be fine in most areas, a 10W40 would be good during the summer in the desert, and a 5W30 might be the way to go if you're driving the car in the winter in the north. If you feel the need to go synthetic, you're on your own. This only applies to older engines. More modern engines have more advanced engineering so check your owner'smanual and FOLLOW THE DIRECTIONS!