Green Tractor Talk banner

1 - 4 of 4 Posts

·
Registered
Joined
·
43 Posts
Discussion Starter #1
I have never owned a Diesel engine before two questions 1 ) do you use regular engine oil you use for a gasoline engine? 2) do you use def ( diesel exhaust fluid)
 

·
Premium Member
Joined
·
13,122 Posts
I have never owned a Diesel engine before two questions 1 ) do you use regular engine oil you use for a gasoline engine? 2) do you use def ( diesel exhaust fluid)
You need to use engine oil formulated for diesel engines. The Deere Plus-50 II is a good oil as is Shell Rotella. Your Operator's Manual will list the particular specifications that your engine oil needs to adhere to. I would advise to NOT skimp when it comes to engine oil or filters.

None of the small JD diesel engines use DEF. New engines over 26HP use a DPF (diesel particulate filter). The 1-series does not have a DPF.
 

·
Premium Member
Joined
·
9,374 Posts
I did notice your thread posting mentioned "Rookie Questions about Fuel", but your questions were about which engine oil and also the DEF fluid, which is an entirely different thing from either engine oil or diesel fuel. I just want to make sure we are talking about the same things so your questions are answered in a helpful manner for you.....

As Jay said, use a oil engineered for Diesel engine use. The needs of a diesel engine's oil are somewhat different than the oil function in a gas engine. While in both cases, they are providing lubrication, the diesel engine oil is subjected to a different "combustion process" as diesel fuel burns where as gasoline burns faster and hotter. This means that residue from the diesel engine fuel in the cylinders is scraped off the cylinder walls by the oil ring and ends up in the diesel engines oil.

If you pull the dipstick on a diesel engine which has run for 30 hours, the oil is likely to be much darker and almost black when compared to the oils appearance when it was added new to the engine. On a gas engine, the oil largely remains the same color and while it will darken some over hours of use, its unusual for a gas engine's motor oil to be as BLACK as a diesel engines motor oil in a relatively short amount of time.

This is why it's important to follow engine oil service guidelines as they are a better indicator of when its time to change the oil than looking at the color of the oil on the dipstick.

There are many great choices of brands of oil, plus synthentic verses non synthetic and the discussion goes on and on and on. Read one of the dozens of threads here on GTT about engine oil brands, weights, types, etc. As Jay said, main thing is buy quality oils and quality filters. Don't try and save a buck with a cheap filter as its just not worth in on the long term costs.

DEF is a fluid added to a pollution control device, its NOT a motor oil added to an engine. Do not confuse DEF with a motor oil as they are not the same thing. Using DEF fluid in your tractors crankcase would be as helpful as filling the engine crankcase with Aunt Jamima Pancake Syrup. While Aunt Jamima's syrup may resemble motor oil, its certainly not the same. Plus, motor oils make a poor substitute for a good breakfast food syrup.....

It's always better to ask and be sure than to make a mistake which can be very costly......Everyone has to learn at some point.....So ask away........
 

·
Registered
Joined
·
3,687 Posts
DEF is a fluid added to a pollution control device, its NOT a motor oil added to an engine. Do not confuse DEF with a motor oil as they are not the same thing. Using DEF fluid in your tractors crankcase would be as helpful as filling the engine crankcase with Aunt Jamima Pancake Syrup. While Aunt Jamima's syrup may resemble motor oil, its certainly not the same. Plus, motor oils make a poor substitute for a good breakfast food syrup.....
It is also not a fuel additive. For vehicles (including tractors) that need it, it is a separate tank that houses DEF kind of like a washer fluid tank. DEF is injected into the exhaust system and isn't burned.
 
1 - 4 of 4 Posts
Top