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Do some short bursts in 2nd/3rd all the way up the rev range and then lift off and let the engine decelerate on its own (no brakes), the engine vacuum created during deceleration sucks the excess oil and metal off the cylinder walls. This gives the piston ring seals change to bed in properly.
The actual gas pressure itself is helps seal them, best to do it in the first 20miles, just make sure the cars warmed up.
Indeedy, there are many conflicting views on this one!!
Ive nearly done c.350 miles in my 182 and havent taken it above 4000rpm, mostly up to 3500 tops, but ive been "working" through the gears nicely up to those points..
I feel happiest doing it this way (rightly or wrongly) - as I still havent been able to find one gospel and technically conclusive answer to this topic. Most peoples running in policies seem to be based on opinion or advice of others rather than hard fact..
It *would* be interesting to see a scientific report/comparison on two different run in styles over a good sample of cars, in the same make model etc. Like myself, most people are using this forum to research some of the biggest purchases theyll make - so its important to get this right.
Maybe something for the Mods could do some research into?
got my car now, wot can i say i love it to bits i got everything with it that i should have.... when i was given the keys i walked over to a car in the showroom that was covered with a reg vardy sheet and they peeled the sheet off .... wot an effect it was amazing did not expect that