5-40 mobil SUV/truck oil in 5-30 autos
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An engine that can handle 5w-30 can also handle 5W-40.
My car's manual lists oil from 5W-20 to 10W-60/20W-50. Depending on driving conditions and ambient temperatures, you should choose the proper viscosity wisely.
My car's manual lists oil from 5W-20 to 10W-60/20W-50. Depending on driving conditions and ambient temperatures, you should choose the proper viscosity wisely.
With my manual, 5w-30 is recommended from the lowest temp till about 60 f or so, with 10w-30 overlapping some of the low range and carrying it up the temp scale. 5w-40 covers the whole range. 15w-40 on the high end only.
Forgive the lack of specifics as I'm work from recollection. I gather the referenced oil is of minimum quality dino that meets spec, as other's have mentioned the high likelihood with these manufacturer guides.
Forgive the lack of specifics as I'm work from recollection. I gather the referenced oil is of minimum quality dino that meets spec, as other's have mentioned the high likelihood with these manufacturer guides.
Still does not answer my question. I think it is because they say it is for towing, etc. Does this mean I can use 0-40 mobil or 10-40 hd mobil? My manual say 5-30 or 10-30. Neither one of my cars use oil betewwn changes. Should I wait until they do before switching to 5-40?
0w40 mobil might be more appropriot for a car calling for 5w30 if you wanted a thicker oil at operating temp, but don't want to sacrifice cold pumpability. for heavy use/abuse/extended drains, the T&SUV might hold up better.
My truck calls for 10w-30 as the "preferred" grade for above 0 temps, but also recommends a 40wt for mostly high-way driving above 5 F.
Specifies to use 5w-30 "only" if cold starts are an issue below 0 F
I've used 10w-30 Havoline for 139k of it's 147k; tried a round of 5w-30 Havoline, to the advise of this board. Truck became somewhat noisey - don't know what "noises" I was hearing, but it just sounded to clattery.
Still ran the same - but I didn't like the extra noises, just didn't sound as smooth as before.
Ran 1 "short" round of the famous GC 0w-30, engine got REALLY clattering, sounded like parts were grinding, it was horrible, really horrible
.
I've found sweet harmony in a 5w-40
, as I wanted a lighter W - weight for cold temps and easier pumping ability then what a 10w-30 had to offer.
I've found no harm in running a 40wt; our coldest temps, so far, have been at 13F, started like a champ.
I will never use a 0w/5w-30 in this particular engine again
. I'm not doubting these grades, I believe they work exceptionally in most engines, but just didn't sound all that wonderful in mine.
My personal choice in oil - for this engine - is the Rotella synthetic.
For my Dodge Diesel we run Delo 400 15w-40.
Specifies to use 5w-30 "only" if cold starts are an issue below 0 F
I've used 10w-30 Havoline for 139k of it's 147k; tried a round of 5w-30 Havoline, to the advise of this board. Truck became somewhat noisey - don't know what "noises" I was hearing, but it just sounded to clattery.
Still ran the same - but I didn't like the extra noises, just didn't sound as smooth as before.
Ran 1 "short" round of the famous GC 0w-30, engine got REALLY clattering, sounded like parts were grinding, it was horrible, really horrible
I've found sweet harmony in a 5w-40
I've found no harm in running a 40wt; our coldest temps, so far, have been at 13F, started like a champ.
I will never use a 0w/5w-30 in this particular engine again
My personal choice in oil - for this engine - is the Rotella synthetic.
For my Dodge Diesel we run Delo 400 15w-40.
You bring up a very valid question Babbydoggy (can we just call you "Puppy" for short?).
The formulation is very attractive but it is rather viscos despite the 5w rating(which is simply falling below a max viscosity @-30c not normal for most of us. I prefer to see the viscosity at 40°c to see how thick the oil is during the warmup phase where parasitic drag can hurt mileage)
the T&Suv is a hearty formulation that obviously uses high viscosity base oil
cSt @ 40ºC 102 & cSt @ 100ºC 14.8
With the standard M1 10w30
cSt @ 40º C 62 & cSt @ 100º C 10.0
M1 EP 5w30
cSt @ 40º C 57.3 & cSt @ 100º C 10.25
Here's a good one
M1 EP 10w40 Still thinner than the 5 w40 for most but extreme cold conditions.
cSt @ 40º C 91.07 cSt @ 100º C 14.2
I am hesitant to try it personaly do to it being nearly twice a thick when cold(normal cold 10-70°f) than any of the m1 w30 offerings. I just don't like to waste gas where 0,5,10w30's are getting great results.
Those numbers equal more power robbed from the engine to pump the oil in my mind which means it takes more gas to make it from point a to b.
The formulation is very attractive but it is rather viscos despite the 5w rating(which is simply falling below a max viscosity @-30c not normal for most of us. I prefer to see the viscosity at 40°c to see how thick the oil is during the warmup phase where parasitic drag can hurt mileage)
the T&Suv is a hearty formulation that obviously uses high viscosity base oil
cSt @ 40ºC 102 & cSt @ 100ºC 14.8
With the standard M1 10w30
cSt @ 40º C 62 & cSt @ 100º C 10.0
M1 EP 5w30
cSt @ 40º C 57.3 & cSt @ 100º C 10.25
Here's a good one
M1 EP 10w40 Still thinner than the 5 w40 for most but extreme cold conditions.
cSt @ 40º C 91.07 cSt @ 100º C 14.2
I am hesitant to try it personaly do to it being nearly twice a thick when cold(normal cold 10-70°f) than any of the m1 w30 offerings. I just don't like to waste gas where 0,5,10w30's are getting great results.
Those numbers equal more power robbed from the engine to pump the oil in my mind which means it takes more gas to make it from point a to b.
M1 5w-40 does not give that thick feeling in my engines, fwiw.
I think we really need to know what car and engine you are asking for. I have mobil 5w-40 for the truck but am not considering it for the honda, lately Valvoline maxlife synthetic 5w-30 has caught my eye as something that looks pretty good:
Test SAE 5W-30 SAE 10W-30
Vis @ 1000C (cSt) 11.65 11.51
Vis @ 400C (cSt) 67.11 72.28
Viscosity Index 170 153
Spec Gravity @ 600 F 0.8551 0.8587
Density (lbs/gal) 7.13 7.16
Total Base Number 10 10
Flash Point COC (0C) 220 230
Pour Point (0C) -42 -42
CCS cP (0C) 5800@-30C 5100@-25C
MRV TP-1 cP (0C) 19,739@-35C 14,200@-30C
Noack % off @ 2500C 11.0 8.31
Sulfated Ash 1.3 1.3
Zinc/Phosphorus, wt% 0.100/0.092 0.100/0.092
Calcium/Moly, wt.% 0.387/0.029 0.387/0.029
ACEA A#/B3 to boot, so HT/HS is likely at 3.5 for the 5w-30
This is the closeset to what I can find for the product sheet on valvolin'e data for something they call Highperformance Synthetic, which has the HT/HS numbers listed, but must be either bulk oil or older formulation still in circulation since the PI sheet is still on the website but not recognizable as any other retail oil. Also some of the VR-1 synthetics look like they have very robust add packs which do not seem to have received enough discusion on the board. Some of them look like they could just be relabled as an HDEO and people here would start using them the add packs are so similar to diesel oils.
[ November 25, 2005, 07:44 AM: Message edited by: reyjay1 ]
Test SAE 5W-30 SAE 10W-30
Vis @ 1000C (cSt) 11.65 11.51
Vis @ 400C (cSt) 67.11 72.28
Viscosity Index 170 153
Spec Gravity @ 600 F 0.8551 0.8587
Density (lbs/gal) 7.13 7.16
Total Base Number 10 10
Flash Point COC (0C) 220 230
Pour Point (0C) -42 -42
CCS cP (0C) 5800@-30C 5100@-25C
MRV TP-1 cP (0C) 19,739@-35C 14,200@-30C
Noack % off @ 2500C 11.0 8.31
Sulfated Ash 1.3 1.3
Zinc/Phosphorus, wt% 0.100/0.092 0.100/0.092
Calcium/Moly, wt.% 0.387/0.029 0.387/0.029
ACEA A#/B3 to boot, so HT/HS is likely at 3.5 for the 5w-30
This is the closeset to what I can find for the product sheet on valvolin'e data for something they call Highperformance Synthetic, which has the HT/HS numbers listed, but must be either bulk oil or older formulation still in circulation since the PI sheet is still on the website but not recognizable as any other retail oil. Also some of the VR-1 synthetics look like they have very robust add packs which do not seem to have received enough discusion on the board. Some of them look like they could just be relabled as an HDEO and people here would start using them the add packs are so similar to diesel oils.
[ November 25, 2005, 07:44 AM: Message edited by: reyjay1 ]
JB,
The use of a w rating for start up viscosity is overly simplistic. How many of us experience starts at the lower limits where these designations are given(-25C -30c, -35c??)? We know that there are 0w oils that are thicker than some 10w oils at start up temps normally encountered.
I would like to look up the redline 5w40 specs for you but the Redline PDF spec sheet won't load for me right now.
The use of a w rating for start up viscosity is overly simplistic. How many of us experience starts at the lower limits where these designations are given(-25C -30c, -35c??)? We know that there are 0w oils that are thicker than some 10w oils at start up temps normally encountered.
I would like to look up the redline 5w40 specs for you but the Redline PDF spec sheet won't load for me right now.
because it can safely be used!!! THe recomendation by the OEM is a comprimise to protect the company from warraty claims from idiots!!!!! Their are some people that are too stupid to be given a choice. GM was the first that i can recall giveing just one recomendation in their owners manuals of 5W30. This gave them an easy out when some knuckle head in Michigan but in 20W50 and spun a bearing in the dead of winter due to viscosity.
5W30 dino will allow a car to start and pump it's oil down to some really cold temps. Todays computer controlled cars will start in temps that will turn some oils almost solid. If the car starts up and no oil is flowing the bearing are going to be ruined. So while 5W30 dino oil is not the best choice for ambient temps. and duty cycles it will always get the vechile through the waranty period reguardles of temp.!! Then you also have C.A.F.E. requirments to meet etc........
Seeing how the only really important aspect of any oil interms of startup protection for the bearings is the "W" rateing any 5W oil is going to pump and flow within the SAE parameters for a 5W oil reguardles of weather it is a 5W20,5W30,5W40,5W50 etc..........
I have tested Redline 5W40 down to -18°F in my 2003 Camry.
5W30 dino will allow a car to start and pump it's oil down to some really cold temps. Todays computer controlled cars will start in temps that will turn some oils almost solid. If the car starts up and no oil is flowing the bearing are going to be ruined. So while 5W30 dino oil is not the best choice for ambient temps. and duty cycles it will always get the vechile through the waranty period reguardles of temp.!! Then you also have C.A.F.E. requirments to meet etc........
Seeing how the only really important aspect of any oil interms of startup protection for the bearings is the "W" rateing any 5W oil is going to pump and flow within the SAE parameters for a 5W oil reguardles of weather it is a 5W20,5W30,5W40,5W50 etc..........
I have tested Redline 5W40 down to -18°F in my 2003 Camry.
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