Comparing Mobil 1 5w50 & Delvac 1 5w40
MOBIL 1 5W50
Viscosity, ASTM D 445
cSt @ 40º C 104.6
cSt @ 100º C 17.4
Sulfated Ash, wt%, ASTM D 874 1.3
Phosphorous 0.1
Flash Point, ºC, ASTM D 92 228
Density @15º C kg/l, ASTM D 4052 0.86
Total Base Number (TBN) 11.8
MRV at -35ºC 27653
Viscosity Index 184
HTHS Viscosity, mPa•s @ 150ºC, ASTM D 4683 4.3
MOBIL DELVAC 1 5W-40
Viscosity, ASTM D 445
cSt @ 40ºC 102
cSt @ 100ºC 14.8
Viscosity Index, ASTM D 2270 151
Sulfated Ash, wt%, ASTM D 874 1.35
Total Base #, mg KOH/g, ASTM D 2896 12
Pour Point, ºC, ASTM D 97 -45
Flash Point, ºC, ASTM D 92 226
Density @ 15ºC kg/l, ASTM D 4052 0.854
You will note the main difference in the spec’s is the cSt at 100º C.
M1 is 17.4 and D1 is 14.8.
As a basic “w40” grade weight oil require a cSt at 100º C between 12.5 to 16.3 and HTHS of 3.7 min. and
a “5W50” REQUIRES 16.3 TO 21.9 cSt at 100º C and a HTHS of 3.7 min as well.
M1 is bordering on a very thick 40 weight something like a 5w45, whereas the D1 is a middle of the range 5w40. If the M1 is closer to 5w45 the viscosity spread is not as bad as it first seems.
As Delvac 1 is $100 for 5L I rethinking perhaps the 5w50 is not that bad in this light as I can get it for about $60 for 5L.
I understand the M1 is considerably thicker (60%) the 10w30’s that are around 11 cSt and I have posted this as an alternative to Delvac 1 and not to get into a thick versus thin debate. Any thoughts to add or fallacy in this this logic.
MOBIL 1 5W50
Viscosity, ASTM D 445
cSt @ 40º C 104.6
cSt @ 100º C 17.4
Sulfated Ash, wt%, ASTM D 874 1.3
Phosphorous 0.1
Flash Point, ºC, ASTM D 92 228
Density @15º C kg/l, ASTM D 4052 0.86
Total Base Number (TBN) 11.8
MRV at -35ºC 27653
Viscosity Index 184
HTHS Viscosity, mPa•s @ 150ºC, ASTM D 4683 4.3
MOBIL DELVAC 1 5W-40
Viscosity, ASTM D 445
cSt @ 40ºC 102
cSt @ 100ºC 14.8
Viscosity Index, ASTM D 2270 151
Sulfated Ash, wt%, ASTM D 874 1.35
Total Base #, mg KOH/g, ASTM D 2896 12
Pour Point, ºC, ASTM D 97 -45
Flash Point, ºC, ASTM D 92 226
Density @ 15ºC kg/l, ASTM D 4052 0.854
You will note the main difference in the spec’s is the cSt at 100º C.
M1 is 17.4 and D1 is 14.8.
As a basic “w40” grade weight oil require a cSt at 100º C between 12.5 to 16.3 and HTHS of 3.7 min. and
a “5W50” REQUIRES 16.3 TO 21.9 cSt at 100º C and a HTHS of 3.7 min as well.
M1 is bordering on a very thick 40 weight something like a 5w45, whereas the D1 is a middle of the range 5w40. If the M1 is closer to 5w45 the viscosity spread is not as bad as it first seems.
As Delvac 1 is $100 for 5L I rethinking perhaps the 5w50 is not that bad in this light as I can get it for about $60 for 5L.
I understand the M1 is considerably thicker (60%) the 10w30’s that are around 11 cSt and I have posted this as an alternative to Delvac 1 and not to get into a thick versus thin debate. Any thoughts to add or fallacy in this this logic.
