10W30 Diesel Oil Recommendations?

[bfloyd4445]

go with a quality synthetic 10/30 made for marine or industrial D service. The only D 30wt is made be delco and is not syn.

 

[bfloyd4445]

Try Amsoil they have more than one D 10-30 full syn

 

[dieselade]

rotella syn blend 10-30

 

[Copperhead]

I use Schaeffer, but there are many good 10w30 HDEO oils in the market. Semi syn can be a mixed bag, but not necessarily a bad choice. I use both 10w30 and 15w40 varieties of Schaeffer semi syn HDEO oils. They are 25% Group IV PAO synthetic with 75% Group II+ conventional. The key to any good oil is a strong additive package. One engine I have currently has 987,000 miles on it. It gets oil changes at roughly 22,000 miles / 450 engine hours. All original and oil samples are as good as when the motor only had 50,000 miles on it. It is a 12.7L Detroit and uses only about 1 qt of oil every 11,000 miles. I am not convinced that a higher priced full synthetic would have delivered any better results.

Some of the store brand HDEO's are very good oils. For instance, Rural King has a very good HDEO.

You can find out what the results are on various oils at the Petroleum Quality Institute of America website.

HEAVY DUTY DIESEL ENGINE OIL | The Petroleum Quality Institute of America

 

[bfloyd4445]

I use Schaeffer, but there are many good 10w30 HDEO oils in the market. Semi syn can be a mixed bag, but not necessarily a bad choice. I use both 10w30 and 15w40 varieties of Schaeffer semi syn HDEO oils. They are 25% Group IV PAO synthetic with 75% Group II+ conventional. The key to any good oil is a strong additive package. One engine I have currently has 987,000 miles on it. It gets oil changes at roughly 22,000 miles / 450 engine hours. All original and oil samples are as good as when the motor only had 50,000 miles on it. It is a 12.7L Detroit and uses only about 1 qt of oil every 11,000 miles. I am not convinced that a higher priced full synthetic would have delivered any better results.

Some of the store brand HDEO's are very good oils. For instance, Rural King has a very good HDEO.

You can find out what the results are on various oils at the Petroleum Quality Institute of America website.

HEAVY DUTY DIESEL ENGINE OIL | The Petroleum Quality Institute of America

What could possibly be good about adding conventional oil that breaks down with heat and forms sludge? To use a blend is like taking a good beer and adding water or mixing hydrogenated oils with butter and selling it to the public as butter like many restruants do. You are aware of the problems with hydrogenated oils in your diet right? Granted because of synthetic oils conventional oils do have a much better additive package now but they still contain all the drawbacks of conventional oil and NONE of the advantages of 100% syn..

 

[Copperhead]

What could possibly be good about adding conventional oil that breaks down with heat and forms sludge? To use a blend is like taking a good beer and adding water or mixing hydrogenated oils with butter and selling it to the public as butter like many restruants do. You are aware of the problems with hydrogenated oils in your diet right? Granted because of synthetic oils conventional oils do have a much better additive package now but they still contain all the drawbacks of conventional oil and NONE of the advantages of 100% syn..

Well,that all sound good from a synthetic oil marketing standpoint, but there are tens of thousands of commercial trucks running the roads with syn blend oils in the motors and going for 50,000 mile plus oil changes. They are not experiencing sludge related issues. I took a '96 Cummins N-14 to 1.4 million miles, doing 30,000 mile oil changes, on a conventional Kendall 15w40. All it ever got was a accessory drive seal and a injector. Everything else original and it went to work for the buyer. My current Detroit 60 has just under 988,000 miles, all original, on a syn blend oil. 22,500 mile oil changes which is 50% longer than the OEM recommended interval.

Modern oil processing has come a long, long way. In fact, the high end conventional based oils come close to matching PAO synthetic performance. The new Natural Gas (GTL) base oils are performing as good as full synthetics. I use a Pennzoil 10w30 GTL conventional oil in my wife's 2006 Cadillac CTS that GM said needed Mobil 1. The motor is still in great shape. IF one looks up the Pennzoil 10w30 conventional at the PIQA website, it even gives Amsoil a run for its money. And I can get a 5 quart jug of the Pennzoil conventional 10w330 for around $16.

 

[buickanddeere]

All depends . Gas, diesel , emissions engine , flat tappet or roller lifters, turbo, cold weather starting concerns etc .

 

[Hysyde]

I use Schaeffer, but there are many good 10w30 HDEO oils in the market. Semi syn can be a mixed bag, but not necessarily a bad choice. I use both 10w30 and 15w40 varieties of Schaeffer semi syn HDEO oils. They are 25% Group IV PAO synthetic with 75% Group II+ conventional. The key to any good oil is a strong additive package. One engine I have currently has 987,000 miles on it. It gets oil changes at roughly 22,000 miles / 450 engine hours. All original and oil samples are as good as when the motor only had 50,000 miles on it. It is a 12.7L Detroit and uses only about 1 qt of oil every 11,000 miles. I am not convinced that a higher priced full synthetic would have delivered any better results.

Some of the store brand HDEO's are very good oils. For instance, Rural King has a very good HDEO.

You can find out what the results are on various oils at the Petroleum Quality Institute of America website.

HEAVY DUTY DIESEL ENGINE OIL | The Petroleum Quality Institute of America

Good info and link, thanks.

 

[bfloyd4445]

Well,that all sound good from a synthetic oil marketing standpoint, but there are tens of thousands of commercial trucks running the roads with syn blend oils in the motors and going for 50,000 mile plus oil changes. They are not experiencing sludge related issues. I took a '96 Cummins N-14 to 1.4 million miles, doing 30,000 mile oil changes, on a conventional Kendall 15w40. All it ever got was a accessory drive seal and a injector. Everything else original and it went to work for the buyer. My current Detroit 60 has just under 988,000 miles, all original, on a syn blend oil. 22,500 mile oil changes which is 50% longer than the OEM recommended interval.

Modern oil processing has come a long, long way. In fact, the high end conventional based oils come close to matching PAO synthetic performance. The new Natural Gas (GTL) base oils are performing as good as full synthetics. I use a Pennzoil 10w30 GTL conventional oil in my wife's 2006 Cadillac CTS that GM said needed Mobil 1. The motor is still in great shape. IF one looks up the Pennzoil 10w30 conventional at the PIQA website, it even gives Amsoil a run for its money. And I can get a 5 quart jug of the Pennzoil conventional 10w330 for around $16.

Yes, oil change intervals have increased with the new trucks but that is in engines engineered and designed specifically for heavy trucking. Your vehicle used for shopping and light duty chores was not engineered to the same standards and likely has change intervals of 10-12 thousand miles like mine do..
My point is simply that it is a proven fact 100% syn is superior as a lubricant and the few cents more it costs is simply cheap insurance.

 

[RickB]

But who among us has had an engine failure in the last decade that was directly attributable to poor engine oil quality?
We all have opinions and favorites, myself included, but there are very few inadequate engine oils out there so long as basic recommendations for API class and viscosity are met.