hello, my dad just bought a new jaguar xf in Korea. it has twin turbo deisel engine, and i was just wondering if i need to keep rpm lower than whatever rpm for 3000~4000kilometers since i'll be driving this car for couple weeks from now. any help will be greatly appreciated. Thanks~!!

 

i dont think it matters, if it has warranty =D that is

 

No amount of precaution can save a jaguar from breaking down. Just drive it.

 

You have to keep that engine below 1000rpm for the first 12,000 miles or you void the warranty.

 

+1

 

Can't speakl for diesels but my experinece suggests that proper breakin makes for a long and happy life with your car. I played the break in game to the letter with my IS350, ISF, s2000, and Acura and wound up with cars that used no oil, got great mileage, and seemed to perform better than advertised... while it may be a poor example I pretty much flogged my 2000 A4 from the day I got it and wound up with a car that used two or three quarts of oil between changes and never ran all that great.

I know this is a subjective opinion but I am a firm beleiver in break in periods.

 

Drive it like someone else stole it.

 

I'd at least follow the owners' manual. They usually speak about RPM limits for so many miles.

 

Go by manufacturer's recommendations. Generally as critical as it used to be, but why take the chance when it's easy to do it right?

 

There are two schools of thought regarding engine "break-in" periods. One school says to be gentle and don't rev it, the other says to drive it as hard as possible. The fact that both schools have reams of anecdotal evidence supporting their POV tells me it doesn't matter. Just change the oil on schedule.

And obviously it would be smart to simply follow the owner's guide.