oil
3rd Gear Member
Joined: Feb 2007
Posts: 551
RE: oil
ORIGINAL: Soaring
BS.. 20/50 is way too much. If you have to run that honey in that engine, it's time for an overhaul.
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-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.
It's 20w at air temp and 50w at 250 degrees. Ever seen how thin 50w is at 250? I have. Pretty damn wattery.
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