How long should I let my Diesel engine run while being stopped after working with a full charge?
A 5 minutes period is largely enough, as the engine's temperature will cool down to reach a stable range.

When stopped, Is it good to let the engine run more than 5 minutes with the engine on?
No, because modern diesel engines turbo compressed are not built to run without charges. This will burn fuel for no reason and the engine will wear off 4 times faster (1 hour stopped with the engine on = 4 hours of weariness).

In what optimal conditions of operation should one use the lock ?
In all conditions where there is risk from spinning : on ice, snow, mud or other.

Can I engage the lock while driving without risking breaking the axle?
Yes, it is possible to put it on while driving, you only need to press on the clutch while at the same time engaging the lock. This will prevent your wheels from spinning while putting the lock on.

Why I should tune up the engine?
The tune up of your Diesel engine provides these great benefits:
More power delivered from your valves (inlet and induction valves)
Your fuel pump will run smoother.
Your engine break will function better. (Jacob Brake)
Saving time, money and fuel.

When should I have an engine tune up ?
Most manufacturers recommend a tune up between
75 000 and 100 000 km, after the grinding in period. All of the recommendations are well written in your maintenance manual.

Should I add special additives in the engine's oil?
All lubricants conformed to the engines manufacturer recommendations and distributed by oil companies already have all the special additives. It is very important to understand that using additives in oil such as : grinding in oil , superior quality oil and special coat to reduce friction, is unnecessary and can even reduce your engine performance.

So never use a special additive to repair your mechanical problems, and watch out for these quick fix miracle products that are supposed to repair your engine in a flash.

The best solution? Follow all the manufacturer guidelines, they are all mentionned in your maintenance manual. Also, change periodically your oil and oil filter to prevent problems. Your engine will last longer and you will have much more pleasure driving your truck. This will surely save you time and money !