At which oil level does the engine perform fastest? (dip stick reading - high or low ?)?

Technically the more oil there is the more resistance there is to the motion of the crankshaft - which just dips into the sump. If there is too much oil in the sump, then the crank can whip up the oil so that it can overflow and get into the cylinders. Racing engines use a dry sump so that this problem doesn't occur. The maximum mark on the dip stick shouldn't be exceeded for this reason. Running your engine at maximum power when the oil is low can also damage the engine as the oil is a coolant as well as a lubricant. I would suggest that optimum position would be midway between max and min.

In answer to your question is the correct level as recommended by the manufacture. For best performance and long engine life. On low level how far are you going to get before the engine blows ?

idealy you want the oil a little below the max marker. but thats not going to make a real impact on performance.

what will make a difference is your choice of oil, go for a good all round performance oil, be careful because certain engines can only properly work with certain grade of oil so make sure you dont buy somthing daft like f1 oil, email a performance oil supplier tell the the car and any engine upgrade and what your going to do with the car, such as track racing and theyll tell you the best oils to buy for your car

I'v read most of the answers & think they are all morons . The oil is the life blood of your car. Keep it full of oil but never over fill. Use a synthetic oil for cold starts. Use oils marked for High profomance . If you are putting your car on a track the diff. in running it low is so min. it's not worth an eng. shorter life span.

The crankshaft has to rotate through the oil. The oil slows it down. I guess it depends on how long you want the engine to last. One quart should give you a couple extra hp but the oil will over heat in about 5 minutes and seize the engine

Oil level won't affect the performance as long as its between high and low.

take it back, ask them to look at it, and purely be sure that they actually fixed the undertaking. there's a collection form of quarts your vehicle will carry, and that they have got have been given a device that tells them that. in case you have the undertaking back i could purely change to a various area or service center. I used couple of minutes lube for rather it sluggish till a machanic save unfold out interior the comparable vehicle parking zone as my artwork. I by no ability had a unmarried undertaking. consistently have been given the early chicken particular on my way into artwork.

If it's that important to you to squeeze the last couple of bhp out of it, go for a dry sump conversion. Other than that keep your oil between the marks shown on the dipstick.

Actually it is safer to have less oil than too much. I do not think that real performance is changed by a half quart less oil in the crank case

stick with the rule not to high nor too low. too much engine oil in crack case will cause the engine over heated also if it too low so keep them in the middle.