I do a lot of urban driving and rarely ever get onto the motorway so I occasionally rev my 1.3 diesel multijet Panda up to 4000rpm when the engine is warm because I've heard it helps stops the EGR valve getting tarred up, a lot of people say an occasional good thrash is good for an engine when warm.

But is it really good? If you rev it too much can it cause premature ware, waste fuel and oil. Can it cause any other harm to the engine or do the benefits outweigh that?

I don't see the point in over-revving the engine personally. All you end up doing is throwing a smoke screen out behind you which no-one will appreciate.

Basically what you need to ensure with your Multijet is that you regularly get it up to proper running temperature. If you more often than not don't get the engine up to temperature, then it is more likely that you'll have problems with your car getting coked up. It's that simple.

You should have regular oil and filter change to keep things running well.

Also fuel - I use a decent brand - not supermarket, especially Sainsburys which I tried once and my Panda hated. Ran terribly, sounded awful and there was no economy!

4000 revs is not 'over-revving'.
I agree that a blast now and then keeps the motor sweet, and I do something similar if I haven't had a long fast journey for a few weeks.

Living on Malta for years I found that my car slowly lost performance because of the heavy traffic and no roads or journeys fast or long enough to give the car a sustained gallop. After a few days on the open fast roads of Italy or Sicily, where we went often, the car felt much more lively.

Go for it, but use your nut when it comes to peak revs, and don't take the Multijet engine over 4000. A good diesel doesn't really need revs just for performance, so treat high revs as preventive medicine and use only when the motor begins to feel constipated.

My 2c /2p worth after four years 65k .Don't drive under 1500rpm even if engines got the torque or you're going downhill etc .Do give the car some serious welly daily ,either 4000rpm on motorway in fourth gear or (better )flat out acceleration in first and second gear . I redline it at least weekly .Keep doing this until smoke stops coming out your exhaust . It's a compromise between fuel economy which will no doubt be affected and coking up the egr / DPF etc The latter will end up costing far more in the long run .If you drive in urban environments this is even more important but even on my long non urban ,part motorway, daily two hour commute my MJ will get smokey if I drive with light right foot for more than 10 minutes or so . It's no wonder DPFs are clogging up left right and centre .
Diesel and oil quality ( and change interval of the latter ) will also affect this .Dont buy cheap and nasty eg supermarket diesel .Find a good source and stick with it .
Don't drive hard / at high revs until well warmed up which may take up to 15 minutes or so .

Good fuel is better than cheap fuel plus additives .

Panda MJ doesn't seem to like 'sitting' undriven for too many days either .Fuel especially if cheap brand will get smoker and brake calliper so start to bind .Brakes need almost as rigorous an Italian tune up schedule as engine !!!

How many Panda Multijets have a DPF?
Mine is an 09 reg and it doesn't.

I don't believe that any of the Mark 3 Pandas have one. They stopped producing Multijets long before the end of the production (possibly as early as 2010). The final year or so of production of the Mark 3 was only Eco petrol models.

Mark 4s have them though.

Sweetsixteen said:

How many Panda Multijets have a DPF?
Mine is an 09 reg and it doesn't.

Click to expand...

From late 2005(06) I think

Mine is a 2005 '05' model and it doesn't have a DPF filter, they do, however, have an EGR valve which can also oil up. In theory, you can't over-rev a modern car because they tend to have a rev limiting facility in the engine management system. Nonetheless, running an engine at consistent high speeds won't do it much good in the long run.

Is blanking off of replacing the EGR at a certain milage not a better idea? what happens if the EGR gets too chocked up? How do you know and what sort of milage would you expect it?

On my Alfa there are swirl flaps to add turbulence to the EGR gases which have a nasty habit of breaking off and getting sucked into the engine. Nothing like this to worry about on the panda I hope?

No swirl flaps on. The Multijet.
Mine has an egr valve which I've deleted electrically.

On my other car, swirl flaps are a known pain, so I have physically removed them, and fooled the ecu into thinking they are still working.

You can only over rev a diesel by dropping into a low(er) gear at high speed. You will only do it once.

Revving it light will do very little apart from make lots of noise. Driving it hard will push lots of air through the engine and clear out gunk and stuff. The good old Italian tune-up.