Thread: Running in new D4 motor

Surely their replacement would have come with a 1000km oil change and check? Should be run in as soon as you turn the key. Modern manufacturing means no more running in oil, but I'd be doing an oil change anyway. Oil is cheaper than (another) new engine. Perhaps run an engine flush (additive to oil, run for 10min at idle then drain oil) through it before dumping the oil, ive found this to work quite well.

Dont be shy with the go pedal either, need to blow the cobwebs and carbon out once in a while.

There is no run in period on a relatively modern engine...

For older designed engines to meet newer and tighter emissions regs the biggest hurdle manufacturers need to over come is internal friction.
To reduce internal friction the easiest thing to do is use a thinner oil and increase bearing clearances etc.

The down side of this is engines use more oil and blow by of fuel is more common.
The 2 obvious engines are the V6 diesel used in disco4, 5 etc and the V8 diesel used in Toyotas.

The service consultant at the dealer said the factory didn't specify an early oil change for new engine but recommended one anyway. I changed oil and filter after about a month myself, and then had scheduled service at 10k/12 months. The new engine has now done about 17k and I reckon it feels a bit freerer.
I'm still wondering if the new engine has an updated crank or not given the engines been recently used on F150 and now coming to the 2022 Ranger?

Originally Posted by Art

The service consultant at the dealer said the factory didn't specify an early oil change for new engine but recommended one anyway. I changed oil and filter after about a month myself, and then had scheduled service at 10k/12 months. The new engine has now done about 17k and I reckon it feels a bit freerer.
I'm still wondering if the new engine has an updated crank or not given the engines been recently used on F150 and now coming to the 2022 Ranger?

No it hasn’t. They didn’t simply make a different crank. The block is also different.

Originally Posted by Art

The new engine has now done about 17k and I reckon it feels a bit freerer.
I'm still wondering if the new engine has an updated crank or not given the engines been recently used on F150 and now coming to the 2022 Ranger?

Its not the same engine in the F150.
I doubt the replacement engine you have is any different to the last of the 3.0lt and is likely to be the last of available stock before they stopped production.

Originally Posted by Art

I'm still wondering if the new engine has an updated crank

What updated crank - no such thing for the standard 3.0 Lion engine. you have what you had before.

Originally Posted by Art

The service consultant at the dealer said the factory didn't specify an early oil change for new engine but recommended one anyway. I changed oil and filter after about a month myself, and then had scheduled service at 10k/12 months. The new engine has now done about 17k and I reckon it feels a bit freerer.
I'm still wondering if the new engine has an updated crank or not given the engines been recently used on F150 and now coming to the 2022 Ranger?

Ford’s Diesel Engine Supervisor, Ken Pumford, claimed that JLR did benefit from the updates to improve durability of the internal components which are common to the JLR engines - namely on the crankshaft line.

These changes though would be after they stopped making the D4 engines, so potentially the D5 received some of these updates.

You would need to know the build date for your new engine to know if it was pre or post these changes. The build date should be stamped onto the engine block or could be on the ID plate attached to the valve cover (but this seems to only apply to the engines built for Citroen).

Otherwise just check some of assembly tags on the wiring harnesses that came with the engine. These are normally stamped with a date and time.

As Dazza say’s - most likely they are using pre-built stock for the D4 before the assembly line was changed to build the D5 engines.

I'll check the build date.