Vertigo1 said:There's a school of thought that says it's very important to load the engine during the first couple of hundred miles. Obviously wait until the engine is fully warmed through (check oil temp, not just water temp) but thereafter make sure you put some load on it, both by hard acceleration and by heavy engine braking.
The cylinders have a honing pattern on their surfaces which aids the sealing of the piston rings and loading the engine ensures that sufficient pressure is applied to properly seal the rings against the cylinder walls. Once the honing pattern is worn off (couple of hundred miles) then no further loading will help seal the rings further.
If the rings aren't sealed properly you'll get blow-by for the rest of the car's life which will slightly reduce power and increase oil consumption, at least the theory goes.
Vertigo1 said:There's a school of thought that says it's very important to load the engine during the first couple of hundred miles. Obviously wait until the engine is fully warmed through (check oil temp, not just water temp) but thereafter make sure you put some load on it, both by hard acceleration and by heavy engine braking.
The cylinders have a honing pattern on their surfaces which aids the sealing of the piston rings and loading the engine ensures that sufficient pressure is applied to properly seal the rings against the cylinder walls. Once the honing pattern is worn off (couple of hundred miles) then no further loading will help seal the rings further.
If the rings aren't sealed properly you'll get blow-by for the rest of the car's life which will slightly reduce power and increase oil consumption, at least the theory goes.
silverlogic said:Dealers told me I didnt have to run it in as audi benchtest the engines before insertion so they are run in already. So on day 2 I was doing 145 against a maserati