Redbug
Veteran Member
I've wondered about "break in oil" and whether it is used anymore. That answers it!
The vast majority of engine builders today no longer use anything remotely similar to break-in oil. GM, Ford, Chrysler, etc in the their cars and trucks do not and have not for decades. Standard 5w-30 or whatever, nothing special.
Shoot, you have a large and increasing number of vehicles, "foreign" and "domestic" that come with full synthetic in them from the factory. Wow! how do they "break-in"? The tolerances and metallurgy is so changed, that there isn't much to break-in anymore, not as we understood it in the past.
Times and technologies change.
I agree with you...when it comes to the automotive industry. However, that's not the tractor industry.
I'm sure most are aware Yanmar makes quite a few of the Deere CUT engines. These engines are not used in just tractors. Some are industrial, some marine usage. I don't expect that technology to be up to the highly regulated (in this case, fuel economy standards) automotive industries.
However, it's probably best to follow the manual. If the first oil change is called out at 50 hours, that's when you change it. If it calls out for 200 hours....then that's when you change it. At least the owner would be covered if there's a warranty problem.
Jim,
I have a friend who bought a Merc back in the 90's and it came with dyno oil in it. Now MB is advocating all synthetics as is Porsche I believe from the start. I remember 20 years ago most manufacturers did advise running a few hundred miles before going synthetics but most of the formulations have changed since then like Mobil 1.
I used to run synthetics after brake in (engine & hydro) on my tractors but now I run 100% Deere oils. The Amsoil I used in my hydraulics had a bad smell after hard use and I had some expansion contraction problems where I had to crack the hoses to get off the quick connects. I don't have those problems with Deere oils. I don't know who makes their oils but I think they are very good.
Subaru, by the way, doesn't recommend synthetics in there cars but I use M1 in it for our cold winter starting.
The most wear on engines is when they first start up. It's not bad if you shut it off and 5 minutes later restart it as most of the oil is still on the walls. It's that first start in the morning that really does the damage.
One of the funniest things I see people do is rev their engine just before they shut it off, mostly on gas cars. You can't do anything worse! It draws raw gas into the cylinders that gets to sit there all night.
Rob
Actually, it doesn't sit there. It washes the oil off the cylinder walls which results in dry starts, drains into the oil pan, and eventually thins the oil as a whole reducing lubrication of the engine.
I will put my $.01 in here. While changing the oil early definitely wont hurt anything but your pocket book and the remaining world oil reserve, I cant see the advantage or need. The manufacturer sets these maintenance intervals for a reason and that is to protect the equipment and thus their warranty. If they specify 50 hours, you can bet the farm that you dont need to change it any quicker than that. I am sure that they have hedged their bets to the point of overkill. I will relate to you what my truck dealer said regarding oil changes, change it when the manual tells you to and anything more is just wasting money and resources. Now I am sure someone is going to flame me, but the old mindset from the 8N tractor days of 3000 mile oil changes for autos is a thing of the past. The lubricants today are so much superior to then that it is no comparison to the wear rate back then and I would bet that back then we still had a 50 hour oil change. Those who still maintain that they do it to protect their investment are just wasting the valuable resources that we have for no benefit. Time is the most dangerous culprit in wear and tear on anything mechanical. There is a good reason why over the road tractor trucks get 3-4 million miles and it is only partially due to the quality of the engines, the biggest thing is that they are constantly running and rarely setting around to collect moisture and corrosion.
A new engine needs time to wear in the rings and bearings so they properly seat. These fine metallic particles collect in the oil filter and you will get rid of most of them with the first oil/filter change. The poorer the machining of the engine, the more wear particles you will have. I am told that some of the old soviet tank engines would wear up to 10 pounds of metal off in the first 50 hours of operation due to the poor machining. I sure hope our CUT engines and transmissions are much better than that. GO ahead Flame away.
I agree with you...when it comes to the automotive industry. However, that's not the tractor industry.
I'm sure most are aware Yanmar makes quite a few of the Deere CUT engines. These engines are not used in just tractors. Some are industrial, some marine usage. I don't expect that technology to be up to the highly regulated (in this case, fuel economy standards) automotive industries.
However, it's probably best to follow the manual. If the first oil change is called out at 50 hours, that's when you change it. If it calls out for 200 hours....then that's when you change it. At least the owner would be covered if there's a warranty problem.
" you know in the winter when you see all that frost on your tractor? (Heads nodded) That frost is in your oil and hydraulic lines and any farmer that wants to keep his equipment running without a big repair bill will change that oil/hydraulic fluid every spring. You can either change out the fluid or heat up the fluid on a regular basis to get rid of the moisture. Water will tear down your machine eventually.
Sounded good to everyone there.