While PP 5W30 has an HTHS of 3.1, PP 5W30 Euro has an HTHS of 3.5
Any real harm in running SAE 30 during summer?
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I've had straight 30wt (Chevron Supreme) in my Ranger 2.5L 4-banger for about 1000 miles now. This engine calls for 5w30. It's been running pretty cold in Seattle lately down to zero on many mornings. I'll admit I've heard some brief "clatter" on a couple of cold start-ups (normally, I've never heard clatter on this engine before). Gas mileage is unchanged as far as I can tell, even though I do quite a few short hops (less than 5 miles).
Just an experiment really. I had hoped it would be a bit warmer this time of year so the freezing temps concern me a little. I think during the summer 30wt would be fine.
I really like the HTHS performance though for when I'm street racing with this little truck! (just joking people!)
Just an experiment really. I had hoped it would be a bit warmer this time of year so the freezing temps concern me a little. I think during the summer 30wt would be fine.
I really like the HTHS performance though for when I'm street racing with this little truck! (just joking people!)
Adding Chevron Supreme straight 30
100 degC = 212 degF Delo 12.1 / PP 12.1/ ACD 10.5 / CS 10.3
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8
No data available on HTHS
100 degC = 212 degF Delo 12.1 / PP 12.1/ ACD 10.5 / CS 10.3
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8
No data available on HTHS
Originally Posted By: Scout1
I've had straight 30wt (Chevron Supreme) in my Ranger 2.5L 4-banger for about 1000 miles now. This engine calls for 5w30. It's been running pretty cold in Seattle lately down to zero on many mornings. I'll admit I've heard some brief "clatter" on a couple of cold start-ups (normally, I've never heard clatter on this engine before). Gas mileage is unchanged as far as I can tell, even though I do quite a few short hops (less than 5 miles).
Just an experiment really. I had hoped it would be a bit warmer this time of year so the freezing temps concern me a little. I think during the summer 30wt would be fine.
I really like the HTHS performance though for when I'm street racing with this little truck! (just joking people!)
Straight 30 is the wrong grade for below 30*f.
I've had straight 30wt (Chevron Supreme) in my Ranger 2.5L 4-banger for about 1000 miles now. This engine calls for 5w30. It's been running pretty cold in Seattle lately down to zero on many mornings. I'll admit I've heard some brief "clatter" on a couple of cold start-ups (normally, I've never heard clatter on this engine before). Gas mileage is unchanged as far as I can tell, even though I do quite a few short hops (less than 5 miles).
Just an experiment really. I had hoped it would be a bit warmer this time of year so the freezing temps concern me a little. I think during the summer 30wt would be fine.
I really like the HTHS performance though for when I'm street racing with this little truck! (just joking people!)
Straight 30 is the wrong grade for below 30*f.
Originally Posted By: jpr
Adding Chevron Supreme straight 30
100 degC = 212 degF Delo 12.1 / PP 12.1/ ACD 10.5 / CS 10.3
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8
Anyone know how these numbers, especially at 10 and 20 degC, compare to a 15W40?
Adding Chevron Supreme straight 30
100 degC = 212 degF Delo 12.1 / PP 12.1/ ACD 10.5 / CS 10.3
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8
Anyone know how these numbers, especially at 10 and 20 degC, compare to a 15W40?
Originally Posted By: Brian Barnhart
Originally Posted By: jpr
Adding Chevron Supreme straight 30
100 degC = 212 degF Delo 12.1 / PP 12.1/ ACD 10.5 / CS 10.3
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8
Anyone know how these numbers, especially at 10 and 20 degC, compare to a 15W40?
Any particular 15W40 you had in mind?
EDIT - generically speaking, I'd expect a 15W40 to be in the range of about 300~350 at 20degC and 600~650 at 10degC
Originally Posted By: jpr
Adding Chevron Supreme straight 30
100 degC = 212 degF Delo 12.1 / PP 12.1/ ACD 10.5 / CS 10.3
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8
Anyone know how these numbers, especially at 10 and 20 degC, compare to a 15W40?
Any particular 15W40 you had in mind?
EDIT - generically speaking, I'd expect a 15W40 to be in the range of about 300~350 at 20degC and 600~650 at 10degC
Last edited:
Originally Posted By: Brian Barnhart
What oils were in use when you observed this?
Going from 13.5 cSt 0W-40 to 9.6 cSt 0W-30.
Both Shell Helix Ultra.
While both are 0W oils, the 0W-30 is much thinner at lower temps.
With the viscosity calculator I found these numbers, both oils are on the list.
What oils were in use when you observed this?
Going from 13.5 cSt 0W-40 to 9.6 cSt 0W-30.
Both Shell Helix Ultra.
While both are 0W oils, the 0W-30 is much thinner at lower temps.
With the viscosity calculator I found these numbers, both oils are on the list.
Originally Posted By: jpr
generically speaking, I'd expect a 15W40 to be in the range of about 300~350 at 20degC and 600~650 at 10degC
Interesting. That would make a 15W40 comparable to an SAE30 at typical summer starting temperatures.
generically speaking, I'd expect a 15W40 to be in the range of about 300~350 at 20degC and 600~650 at 10degC
Interesting. That would make a 15W40 comparable to an SAE30 at typical summer starting temperatures.
Last edited:
Originally Posted By: SpitfireS
Originally Posted By: Brian Barnhart
What oils were in use when you observed this?
Going from 13.5 cSt 0W-40 to 9.6 cSt 0W-30.
Both Shell Helix Ultra.
While both are 0W oils, the 0W-30 is much thinner at lower temps.
With the viscosity calculator I found these numbers, both oils are on the list.
As a percentage, the 0W30 and 0W40 are closer together (in viscosity) at cold temperatures than warm. Of course that only makes sense given their weights. I'm not saying you are lying, but I have a really hard time believing that your engine's warm-up time would change significantly simply due to the differences in the viscosities of those two oils.
Originally Posted By: Brian Barnhart
What oils were in use when you observed this?
Going from 13.5 cSt 0W-40 to 9.6 cSt 0W-30.
Both Shell Helix Ultra.
While both are 0W oils, the 0W-30 is much thinner at lower temps.
With the viscosity calculator I found these numbers, both oils are on the list.
As a percentage, the 0W30 and 0W40 are closer together (in viscosity) at cold temperatures than warm. Of course that only makes sense given their weights. I'm not saying you are lying, but I have a really hard time believing that your engine's warm-up time would change significantly simply due to the differences in the viscosities of those two oils.
Originally Posted By: Brian Barnhart
Originally Posted By: jpr
generically speaking, I'd expect a 15W40 to be in the range of about 300~350 at 20degC and 600~650 at 10degC
Interesting. That would make a 15W40 comparable to an SAE30 at typical summer starting temperatures.
Rotella T 15W40 numbers are 15.5 / 120 / 357.3 / 697.2
Originally Posted By: jpr
generically speaking, I'd expect a 15W40 to be in the range of about 300~350 at 20degC and 600~650 at 10degC
Interesting. That would make a 15W40 comparable to an SAE30 at typical summer starting temperatures.
Rotella T 15W40 numbers are 15.5 / 120 / 357.3 / 697.2
Originally Posted By: Brian Barnhart
I'm not saying you are lying, but I have a really hard time believing that your engine's warm-up time would change significantly simply due to the differences in the viscosities of those two oils.
I have no hard data, like oil temp readings.
Just the water temp and how the engine ran and its noise going into higher revs.
The engine sounded smoother and ran smoother with the 0W-30 from the (cold) start.
Honda recommends a 10W-30 or 5W-40 for the engine, so both oils are ok to use.
This engine also has an oil/coolant heat exchanger, I don't know if that helps too in getting the oil up to temp faster.
More flow through that (small) heat exchanger core may do the trick?
I'm not saying you are lying, but I have a really hard time believing that your engine's warm-up time would change significantly simply due to the differences in the viscosities of those two oils.
I have no hard data, like oil temp readings.
Just the water temp and how the engine ran and its noise going into higher revs.
The engine sounded smoother and ran smoother with the 0W-30 from the (cold) start.
Honda recommends a 10W-30 or 5W-40 for the engine, so both oils are ok to use.
This engine also has an oil/coolant heat exchanger, I don't know if that helps too in getting the oil up to temp faster.
More flow through that (small) heat exchanger core may do the trick?
100 degC = 212 degF Delo 12.1 / PP 12.1/ ACD 10.5 / CS 10.3 / RT 15.5
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8 / RT 120
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7 / RT 357
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8 / RT 697
DELO is DELO SAE 30 (straight wt. conventional)
PP is Pennzoil Platinum 5W-30 (multigrade synthetic)
ACD is Amsoil ACD SAE 30 / 10W-30 (straight wt. and multigrade synthetic)
CS is Chevron Supreme SAE 30 (straight wt. conventional)
RT is Rotella T 15W-40 (multigrade conventional)
40 degC = 104 degF Delo 105 / PP 67.1/ ACD 66.3 / CS 80.8 / RT 120
20 degC = 68 degF Delo 346.1 / PP 127.6/ ACD 176.4 / CS 251.7 / RT 357
10 degC = 50 degF Delo 726.5 / PP 277.9/ ACD 321.7 / CS 510.8 / RT 697
DELO is DELO SAE 30 (straight wt. conventional)
PP is Pennzoil Platinum 5W-30 (multigrade synthetic)
ACD is Amsoil ACD SAE 30 / 10W-30 (straight wt. and multigrade synthetic)
CS is Chevron Supreme SAE 30 (straight wt. conventional)
RT is Rotella T 15W-40 (multigrade conventional)
Any chance of adding Valvoline straight 30wt conventional? I have 6 qts of that as well and I'm wondering how that compares to the others. Kinda surprised at how much different the Delo is from the CS...
let me add to this "old" thread. a multigrade 5w30 will run almost identical to a sae30 when your motor is running at operating temp. the grade of oil used is determined by the climate it runs in, not just viscosity or because its a multigrade.
motor oil has 3 major functions (listed in order):
1. lubricate
2. cooling
3. suspension medium (move dirt to filter)
for all intensive purposes, a 5w30 and a sae30 will do #1 and #3 identically at operating temp. its #2 that has difference. multigrades use additive and these additives change the ability for the oil to cool. a sae30 can cool much better than a multigrade.
so why use sae30? well, in hot desert climates (AZ, NV, TX, etc) in summertime the night temp may be 75F and day temps can be 110+. for this climate (and for the better cooling properties) i would choose a quality sae30 synthetic like Royal Purple, Redline, or AMSoil. really no need for a multigrade. the winter months in some desert locations can dip to about freezing (phoenix, tucson, valley areas, etc), so then i might switch to a 10w30.
motor oil has 3 major functions (listed in order):
1. lubricate
2. cooling
3. suspension medium (move dirt to filter)
for all intensive purposes, a 5w30 and a sae30 will do #1 and #3 identically at operating temp. its #2 that has difference. multigrades use additive and these additives change the ability for the oil to cool. a sae30 can cool much better than a multigrade.
so why use sae30? well, in hot desert climates (AZ, NV, TX, etc) in summertime the night temp may be 75F and day temps can be 110+. for this climate (and for the better cooling properties) i would choose a quality sae30 synthetic like Royal Purple, Redline, or AMSoil. really no need for a multigrade. the winter months in some desert locations can dip to about freezing (phoenix, tucson, valley areas, etc), so then i might switch to a 10w30.
Any real harm in running SAE 30 during summer?
NO
NO
Same cool/cold visc as 15w-40.
No especialy if it is a SM SAE 30!
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