9 Worst Things You Can Do to a Diesel Engine

[Too many Kubotas]

The differences between on road and off road are - red dye and fuel Taxes. But, depending on the area one or the other may have sat longer.

I couldn't care less how long the fuel has been sitting.

Most of mine is about three years old by now, and one tank closer to 10. Treated and stored correctly it doesn't seem to matter one bit how old the fuel is.

 

[dodge man]

"In diesel engines, where internal pressures and operating temperatures are often higher than in gas engines.."

That statement is wrong. Diesel burns much colder than gas and is less violent than gas, that's why diesel engines last much longer as diesel does much less wear and tear on the engine parts compared to gas

I’m not sure I agree with you. Diesels run high compression and in some cases are working at very high throttle settings for long periods of time. Diesels are built for it though.

 

[Shawn T. W.]

Diesels generally are in to 40:1 - 50:1 compression ratio, and well over 400 psi in a compression check ... IIRC ...

There is a reason there is a hefty upcharge for a diesel engine in a pickup truck over the standard gasser ... They cost more to make!

 

[Minsid]

Regarding shutting off with a hot turbo. I see why not to do so but how long should one wait. There is no gage to check that it has cooled. Is this 30 seconds at idle? 5 min?

 

[Shawn T. W.]

Some trucks have a pyrometer which shows exhaust temperature, once they cool off you can shut it down.

A hot turbo is one that's been working hard, not puttering around ...

On my semi-truck I back off the fuel a bit before the off ramp, and ease on down to the stop sign/light, unless it's a steep uphill from the end of the ramp, it's not working hard to get into a truck stop, when I ease up to the fuel pump, I set the brakes and shut it off ...

If I'm pulling a long steep grade, and stop at the very top for a rest area, I leave it running for 5 minutes ...

I don't have a turbo on either of my tractors.