Z71
Gold Member
Viscosity - resistance to flow of a liquid.
5w-30 synthetic
- Thread starter stevemcg
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</font><font color="blue" class="small">( BTW, doesn't viscosity refer to the ability of a lubricant to resist "shear" and, if so, don't the higher viscosity figures for Delvac 1 at each of the test temperatures indicate a superior shear resistance? Perhaps you can educate me on this. )</font>
Yes but I do not know if Mobil is shear stable or not. Just because it has a higher number does not mean it will stay high either. I know the shear ratings (A1/A5) which are go gas engines though.
Series 3000, 5w-30 is 5067 Cp @ -25C
Mobil Delvac 5w40 crank 3200cp@-25° °
Delvac 1 is an SAE 5w-40, but the viscosity index is only 151.
Amsoil 5w30 Viscosity Index (ASTM D-2270) 178
Mobil Delvac HT/HS of 4.2
Amsoil 3000 Ht/Hs >3.5
</font><font color="blue" class="small">( Even granting the validity of the additional data you posted, the fact remains that Delvac 1 is clearly a "heavy duty deisel engine oil" that meets the CI-4 and CH-4 specs that earlier posts suggested were ONLY met by Amsoil. It seems to me that that is just flat-out wrong, regardless of whether other considerations may make Amsoil superior for extended change intervals; a subject on which I am not knowledgeable and gladly defer to you.)</font>
The numbers are right so I would not even doubt that. I will say Mobil Delvac is a diesel oil, period. That is it. If you compare add pkd to add pkg, in the long run Amsoil Series 3000 will perform better, way better. You really can’t compare the two oils over lets say 7,500 miles since one is a din oil and the other a better oil. Amsoil has it’s best add pkg in this and it will and does outperform Delvac. Look at the price delta. You get what you pay for.
AS far as the CI rating, at one time maybe Amsoil had the only newest rating, do not know. Since I do not worry about API ratings. My BX22 does not need a CI rating so I do not worry about it.
Yes but I do not know if Mobil is shear stable or not. Just because it has a higher number does not mean it will stay high either. I know the shear ratings (A1/A5) which are go gas engines though.
Series 3000, 5w-30 is 5067 Cp @ -25C
Mobil Delvac 5w40 crank 3200cp@-25° °
Delvac 1 is an SAE 5w-40, but the viscosity index is only 151.
Amsoil 5w30 Viscosity Index (ASTM D-2270) 178
Mobil Delvac HT/HS of 4.2
Amsoil 3000 Ht/Hs >3.5
</font><font color="blue" class="small">( Even granting the validity of the additional data you posted, the fact remains that Delvac 1 is clearly a "heavy duty deisel engine oil" that meets the CI-4 and CH-4 specs that earlier posts suggested were ONLY met by Amsoil. It seems to me that that is just flat-out wrong, regardless of whether other considerations may make Amsoil superior for extended change intervals; a subject on which I am not knowledgeable and gladly defer to you.)</font>
The numbers are right so I would not even doubt that. I will say Mobil Delvac is a diesel oil, period. That is it. If you compare add pkd to add pkg, in the long run Amsoil Series 3000 will perform better, way better. You really can’t compare the two oils over lets say 7,500 miles since one is a din oil and the other a better oil. Amsoil has it’s best add pkg in this and it will and does outperform Delvac. Look at the price delta. You get what you pay for.
AS far as the CI rating, at one time maybe Amsoil had the only newest rating, do not know. Since I do not worry about API ratings. My BX22 does not need a CI rating so I do not worry about it.
Maddog,
Mobil 1 "Delvac" is an excellent "Heavy Duty" diesel rated oil... no question... All of my concerns have been directed towards discussion centered around using the term "synthetics" and saying Mobil 1, or whatever, and not specifying that folks should be aware that not all gasoline rated engine oils, even sythetics are "Heavy Duty" rated....
When you said "Delvac" that changes the whole discussion. Just like saying "Rotella" for Shell, "Ursus" for Texaco , "XD" for Exxon, "Delo" for Chevron, etc...
The oil manufacturers generally name their specialty oils... such as Delvac for Mobil 1... it is however different than just saying "Mobil 1" which is their gasoline engine oil and has a lower diesel rating...
So you can go to your local automotive store, or Walmart and buy synthetic oils such as Castrol Syntac, or Mobil 1, or Havoline Synthetic, etc. etc. but they are not necessarily "Heavy Duty" rated.
So, just trying to clear up the subject for people who are reading these posts and may be new to diesels are aware of the need to either use "Heavy Duty" versions of the synthetic oils or an oil that meets their tractors specifications for diesels.... /forums/images/graemlins/smile.gif
That is all I have been trying to point out.... use diesel rated oils that have additive packages designed to deal with the heavy soot handling requirements of these engines....
Mobil 1 "Delvac" is an excellent "Heavy Duty" diesel rated oil... no question... All of my concerns have been directed towards discussion centered around using the term "synthetics" and saying Mobil 1, or whatever, and not specifying that folks should be aware that not all gasoline rated engine oils, even sythetics are "Heavy Duty" rated....
When you said "Delvac" that changes the whole discussion. Just like saying "Rotella" for Shell, "Ursus" for Texaco , "XD" for Exxon, "Delo" for Chevron, etc...
The oil manufacturers generally name their specialty oils... such as Delvac for Mobil 1... it is however different than just saying "Mobil 1" which is their gasoline engine oil and has a lower diesel rating...
So you can go to your local automotive store, or Walmart and buy synthetic oils such as Castrol Syntac, or Mobil 1, or Havoline Synthetic, etc. etc. but they are not necessarily "Heavy Duty" rated.
So, just trying to clear up the subject for people who are reading these posts and may be new to diesels are aware of the need to either use "Heavy Duty" versions of the synthetic oils or an oil that meets their tractors specifications for diesels.... /forums/images/graemlins/smile.gif
That is all I have been trying to point out.... use diesel rated oils that have additive packages designed to deal with the heavy soot handling requirements of these engines....
MadDog
Platinum Member
Thanks, Surge.
I understand that Mobil 1 is a premium, but not a "Heavy Duty" oil, primarily for gasoline engines. BTW, I gather that "Heavy Duty" indicates oils intended to be used in deisel engines? That is where Mobil Delvac 1 comes in, as I understand Delvac 1 is the "HD" equivilent, for deisel engines, of Mobil 1.
Mike is obviously sold on the superiority of Amsoil 3000 over Delvac 1 for deisels, although I am not at all clear on the technology behind his reasons.
I do not intend to use extended change intervals unless oil testing/analysis indicates that I have plenty of useful life left in the oil at the end of the interval recommended in my owners' manual. ....so I guess I don't need to worry too much about the technology. /forums/images/graemlins/grin.gif
I understand that Mobil 1 is a premium, but not a "Heavy Duty" oil, primarily for gasoline engines. BTW, I gather that "Heavy Duty" indicates oils intended to be used in deisel engines? That is where Mobil Delvac 1 comes in, as I understand Delvac 1 is the "HD" equivilent, for deisel engines, of Mobil 1.
Mike is obviously sold on the superiority of Amsoil 3000 over Delvac 1 for deisels, although I am not at all clear on the technology behind his reasons.
I do not intend to use extended change intervals unless oil testing/analysis indicates that I have plenty of useful life left in the oil at the end of the interval recommended in my owners' manual. ....so I guess I don't need to worry too much about the technology. /forums/images/graemlins/grin.gif
</font><font color="blue" class="small">( ( Mike is obviously sold on the superiority of Amsoil 3000 over Delvac 1 for deisels, although I am not at all clear on the technology behind his reasons. ) )</font>
I am not sold but reading and looking at ASTM and SAE spec at work since using Amsoil (1994 time frame) it is pretty good oil. Is it the best, no. It is the best "bang for the dollar" out there I feel.
I do not use their Series 3000 but you can't compare the two oils (delvac and Series 3000). One is a dino oil and one has a real top of the line synthetic with a very heavy duty add pkg (amsoil's best to date). Also look the the price, even dealer price. You get what you pay for. Some things cost more because they are better.
Look at the numbers I posted; some are close to each other and some are way off.
If you like ash in your oil, like using more oil in between changes, a lower ZDDP, a higher pour point then use Delvac. Again, the two [Delvac and Series 3000] are not in the same ball park. I have even told people if the price scares you then use Delvac or Dello.
Again it is a good oil [Delvac] if you are not going longer. But for me I like the extra protection and using my time management better.
I use there 15w-40 HDD&M ($17 a gallon) which thins a tad (from shear) but I could careless. The oil tests are great and last one year! Don't try that with Delvac boy and girls! /forums/images/graemlins/smile.gif
I am not sold but reading and looking at ASTM and SAE spec at work since using Amsoil (1994 time frame) it is pretty good oil. Is it the best, no. It is the best "bang for the dollar" out there I feel.
I do not use their Series 3000 but you can't compare the two oils (delvac and Series 3000). One is a dino oil and one has a real top of the line synthetic with a very heavy duty add pkg (amsoil's best to date). Also look the the price, even dealer price. You get what you pay for. Some things cost more because they are better.
Look at the numbers I posted; some are close to each other and some are way off.
If you like ash in your oil, like using more oil in between changes, a lower ZDDP, a higher pour point then use Delvac. Again, the two [Delvac and Series 3000] are not in the same ball park. I have even told people if the price scares you then use Delvac or Dello.
Again it is a good oil [Delvac] if you are not going longer. But for me I like the extra protection and using my time management better.
I use there 15w-40 HDD&M ($17 a gallon) which thins a tad (from shear) but I could careless. The oil tests are great and last one year! Don't try that with Delvac boy and girls! /forums/images/graemlins/smile.gif
teddydo
Silver Member
Mike I like your hat. What is the trigger point to change a filer. I am thinking do it at the same time I would normally change my oil, like 5000k. Someone said a filter will clog up quicker with the grade 4 and 5 oils because of the cleaners in the oil. The oil tests do not tell when to do this do they. I am talking about my gas burner pickup,,a tacoma. teddy
If you have been running synthetic for sometime you can go 6 months or 12K (Amsoil guidelines) and their filters.
What I would do if just recently switching I would run a synthetic for the normal drain interval (7,500 in manual?) and drain; then the next interval I would do longer (to the normal extended drains).
If you change at 5K you should be more then fine unless you used a poor oil to start with.
The oil tests, if bad, the testing lab will call you or fax you. If the oil needs to be changed it will tell you on the results. So far in 10 years I have never had them tell me to drain the oil. Every time if says “Oil is safe for continued use; resample at next interval”. Every time the length of time, 1-year, happens first. I am going to shoot for 15K (from 12.2K) on this interval on my Lexus.
I want to note Amsoil is not the best oil in the world and I am open to other oils. But I need to find another oil cheaper, same protection and longevity is the same.
What I would do if just recently switching I would run a synthetic for the normal drain interval (7,500 in manual?) and drain; then the next interval I would do longer (to the normal extended drains).
If you change at 5K you should be more then fine unless you used a poor oil to start with.
The oil tests, if bad, the testing lab will call you or fax you. If the oil needs to be changed it will tell you on the results. So far in 10 years I have never had them tell me to drain the oil. Every time if says “Oil is safe for continued use; resample at next interval”. Every time the length of time, 1-year, happens first. I am going to shoot for 15K (from 12.2K) on this interval on my Lexus.
I want to note Amsoil is not the best oil in the world and I am open to other oils. But I need to find another oil cheaper, same protection and longevity is the same.
teddydo
Silver Member
grsx, Amen on finding a cheaper grade 5 oil. In my area the only good stuff to my findings is Red Line and I use it. At eight bucks a quart I would entertain another brand. I am just glad this is available to me though. I love the Red Line though, it even looks different on the stick and you can truly tell the dirt stays in the oil. Thank You for your opinion,,teddy
Gamemaster
Silver Member
1st tractor L2350DT 1100hrs. , no experience, bought it late fall and put in my garage in the city, I have 40ac. in country for future homesite to prepare. No past history on the tractor. I have done alot of reading on this great site and concluded I would like to change all fluids/filters and use Amsoil engine oil and super UDT for the rest. My question: The Kubota manual states for oil : 77F. and higher use SAE30, 10w-30,10w-40...from 0F. to 77F. SAE20,10w-30,10w-40 and below 0F. use SAE10,10w-30,10w-40....... most of my work will be spring thru fall. The Amsoil only has 5w-30 and 15w-30 for HD-diesel synthetic. Will 5w-30 be O.K. for hot summer work ? Neither weight ( 5w-30/15w-30) is listed in the manual and the engine has 1100hrs. I would appreciate the insight.
Thanks,Ed
Thanks,Ed
SeymourBota
Platinum Member
Both will work fine- synthetic steps to the beat of its own drummer in terms of high and low temperature.
In your location, the 15W-40 should be perfect, unless you expect to see temps in the winter less than -40!!!
In your location, the 15W-40 should be perfect, unless you expect to see temps in the winter less than -40!!!
