Got my brand new Focus ST-3 yesterday. Do these cars need to be run in or is that not necessary on a modern engine?

Views will be appreciated.

 

All of that should be covered in your owners manual - have a read

 

As Paul says!

All engines need "some" running in.

Alex

 

Thrash it, it will be fine - what do you think the boat loaders and delivery boys have been doing to it

 

nice one scruffy

 

well I admit i use to hit the redline in all the toyotas and lexus I PDI and took on road test

 

leather it,...

if anything breaks it will be covered by warranty

 

give it shit, it will be fine, all the engines are chucked on a simple engine dyno and given shit before they get in the car so why worrie.

 

Make sure you let it warm up and cool down properly, don't forget you're also letting other components such as brakes bed in

 

isn't it quite often controlled/restricted by the engine management on most cars these days?

 

sadly the gearboxes aint run in aswell

 

If you thrash a car from new you can get problems later for example excessive oil consumption

All cars need to be treated with some respect as bearings and rings need to be bedded in etc...

The only difference is engine tolerences are very small

 

 

i hope no bearings in the engine needs running in

 

i was once workin in prufleet where they get all the spankers off the boats

they get cained all for bout 5 mins, from cold aswell so i wouldnt worry too much about it


think about all the ex demo cars, they get a hammerin by loadsa people and you still get ex demo cosworths comeup for sale

 

20 grands worth treat it with respect at first

 

bloke at work years ago remembers cainin saff cossies off the ships aswell

 

All plain bearings are not prefect they come with high spots hence the use of mineral oils in older engines and a bedding in compound in new stuff, They use a grey graphite stuff in Honda engines to help this process...and as for rings if you thrash a car from cold these items get hot and wear quickly and this reduces there sealing performance in later life...Which = excessive oil consumption

So why are engines run in on a dyno for several hours at different loads ???????????????????????

Correct me if i'm wrong but the term "blueprinting" come from building an engine and on bearings using engineers blue to find high spots and then removing them to near prefect condition