Oil question 10-30W or 0-50W?
10-06-2003, 11:07 AM
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Oil question 10-30W or 0-50W? I was running 0-50W Moble One during my last interval (oil change) and did not have any residual oil in PCV catch can during the 3K.
This interval was after a H/C swap, LS6 valley cover and catch can installation.
I switched a few weeks ago to Moble One 10-30W oil. On a recent extended highway trip, I noticed some residual oil in my catch can (less than one once).
Question; Since I hate an oily PCV catch can, should I switch back to 0-50W or is the 10-30W better suited for my engine? I live in the NE and do mostly local driving....
This interval was after a H/C swap, LS6 valley cover and catch can installation.
I switched a few weeks ago to Moble One 10-30W oil. On a recent extended highway trip, I noticed some residual oil in my catch can (less than one once).
Question; Since I hate an oily PCV catch can, should I switch back to 0-50W or is the 10-30W better suited for my engine? I live in the NE and do mostly local driving....
10-07-2003, 07:51 AM
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Re: Oil question 10-30W or 0-50W? Honestly, oil recommendations in North America are driven more by fuel economy than engine longevity. If you look at the owner's manuals of LS1 powered cars that are sold in Europe or Australia, they don't specify 5w30 as the main recommended viscosity. They recommend stuff like 5w40 and 10w40.
10-07-2003, 10:04 AM
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Re: Oil question 10-30W or 0-50W? Patman#1:
I suppose it was 15-50W - it was a Moble One product...I'm sure it had a "50" in it....
Can you please explain oil weights; I'm confused. Is a heavier weight oil thicker?
What is the spread between the rated numbers mean; is the first and second numbers the oil weight when at ambient temperature and operating temperature, respectively? Why is this important?
I suppose it was 15-50W - it was a Moble One product...I'm sure it had a "50" in it....
Can you please explain oil weights; I'm confused. Is a heavier weight oil thicker?
What is the spread between the rated numbers mean; is the first and second numbers the oil weight when at ambient temperature and operating temperature, respectively? Why is this important?
10-07-2003, 01:15 PM
#7
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Re: Oil question 10-30W or 0-50W? Todd, you would definitely be better off with a 10w40 in your car, that turbo heats up the oil a lot.
Robert, the first number in an oil's viscosity is it's cold cranking performance. The best performing one is the 0w designation, this means the oil's cold cranking number is better than 6200cp at -35 degrees celcius. Next up is the 5w, which means the cold cranking must be better than 6600cp at -30C. So as the first number gets higher, this means it's cold weather performance is not as good.
The second number indicates it's viscosity at 100 celcius (212F) A higher number means the oil is thicker. Here is the scale for those numbers:
20 weight is between 5.6 to 9.3 cst at 100c
30wt is 9.3 to 12.5
40wt is 12.5 to 16.3
50wt is 16.3 to 21.9
60wt is 21.9 to 26.1
The tricky part is that not every engine likes the same viscosity. It depends on the clearances in the engine, ambient temperature where you live, your driving habits, and the mileage on your vehicle. Ideally you want to run an oil that is thin enough to flow very well and give good MPG, but thick enough to protect the bearings. And when you run hotter oil temps, your oil thins out, so someone who does tons of road racing and sees 300 degree oil temps definitely needs a thicker oil than a guy who drives gently around town and never goes full throttle.
Robert, the first number in an oil's viscosity is it's cold cranking performance. The best performing one is the 0w designation, this means the oil's cold cranking number is better than 6200cp at -35 degrees celcius. Next up is the 5w, which means the cold cranking must be better than 6600cp at -30C. So as the first number gets higher, this means it's cold weather performance is not as good.
The second number indicates it's viscosity at 100 celcius (212F) A higher number means the oil is thicker. Here is the scale for those numbers:
20 weight is between 5.6 to 9.3 cst at 100c
30wt is 9.3 to 12.5
40wt is 12.5 to 16.3
50wt is 16.3 to 21.9
60wt is 21.9 to 26.1
The tricky part is that not every engine likes the same viscosity. It depends on the clearances in the engine, ambient temperature where you live, your driving habits, and the mileage on your vehicle. Ideally you want to run an oil that is thin enough to flow very well and give good MPG, but thick enough to protect the bearings. And when you run hotter oil temps, your oil thins out, so someone who does tons of road racing and sees 300 degree oil temps definitely needs a thicker oil than a guy who drives gently around town and never goes full throttle.
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10-06-2014, 03:32 PM
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Oil-Batch Cannery Todd, you would definitely be better off with a 10w40 in your car, that turbo heats up the oil a lot.
Robert, the first number in an oil's viscosity is it's cold cranking performance. The best performing one is the 0w designation, this means the oil's cold cranking number is better than 6200cp at -35 degrees celcius. Next up is the 5w, which means the cold cranking must be better than 6600cp at -30C. So as the first number gets higher, this means it's cold weather performance is not as good.
The second number indicates it's viscosity at 100 celcius (212F) A higher number means the oil is thicker. Here is the scale for those numbers:
20 weight is between 5.6 to 9.3 cst at 100c
30wt is 9.3 to 12.5
40wt is 12.5 to 16.3
50wt is 16.3 to 21.9
60wt is 21.9 to 26.1
The tricky part is that not every engine likes the same viscosity. It depends on the clearances in the engine, ambient temperature where you live, your driving habits, and the mileage on your vehicle. Ideally you want to run an oil that is thin enough to flow very well and give good MPG, but thick enough to protect the bearings. And when you run hotter oil temps, your oil thins out, so someone who does tons of road racing and sees 300 degree oil temps definitely needs a thicker oil than a guy who drives gently around town and never goes full throttle.
Robert, the first number in an oil's viscosity is it's cold cranking performance. The best performing one is the 0w designation, this means the oil's cold cranking number is better than 6200cp at -35 degrees celcius. Next up is the 5w, which means the cold cranking must be better than 6600cp at -30C. So as the first number gets higher, this means it's cold weather performance is not as good.
The second number indicates it's viscosity at 100 celcius (212F) A higher number means the oil is thicker. Here is the scale for those numbers:
20 weight is between 5.6 to 9.3 cst at 100c
30wt is 9.3 to 12.5
40wt is 12.5 to 16.3
50wt is 16.3 to 21.9
60wt is 21.9 to 26.1
The tricky part is that not every engine likes the same viscosity. It depends on the clearances in the engine, ambient temperature where you live, your driving habits, and the mileage on your vehicle. Ideally you want to run an oil that is thin enough to flow very well and give good MPG, but thick enough to protect the bearings. And when you run hotter oil temps, your oil thins out, so someone who does tons of road racing and sees 300 degree oil temps definitely needs a thicker oil than a guy who drives gently around town and never goes full throttle.
10-06-2014, 05:31 PM
#9
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I worked in Oil Refinery,Cannery Batch plant & run 2''inch line to supply entire batch plant where #13 Brands of Non-synthetic oil was bottled & watched & talked to Sun Oil employees about "Additive"packages to let company tradeMark to be placed to all 13 products. The ingredient for multi-viscosity came in blocks, then cut & added to specific amounts to each "batch" of a particular Multi-viscosity.10-30,10-40 % so on.Forget correct name of jello like block of muti-viscosity additive.It was Very Educational.Never run Trop-Artic.!!LOL.Kieffer Davis.L.U.#430-PipeFitter/Welder.Hope I posted correctly.! Did not mean to Hi-Jack thread.!
Now I've got to go drill holes in my exhaust like some other great new member suggested.
