How soon is too soon?!

phunk · 02-19-2015, 02:02 PM

Quote:

Originally Posted by BlackZeda

I strictly followed the break-in period instructions when I bought my Z new....when they replaced the engine under warranty at 40K miles I strictly followed them again.

I think this thread has all the evidence we need as to the value of the "proper" break in procedure

DEpointfive0 · 02-19-2015, 02:07 PM

I've heard both sides of the story, break in the way you drive/thank the kid at the dealer who did a burn out in your car... Then I speak to the engineers at work... They say 90+% of the break in is done in the first few strokes of the engine being on and within a few miles of the car being driven. BUT they all baby their cars as well, some say in case a bigger piece of metal flies off at 6k RPMs the oil may not have the chance to prevent it from getting sucked into something.

They all said a few oil changes should be done very quickly.

Personally, I'd say break it in properly. You just spent $30-50k on the car, why not spend some time breaking it in? And I'd do an oil change after like 100 miles, then keep driving slow to about 1000 and do another oil change.

phunk · 02-19-2015, 02:19 PM

When I bought my Z, it had like 6 miles on it... so it was broken in before I got to it. I think my mustang had 12... thats more than broken in.

The only reason I do not go immediate full throttle on a fresh fully built engine is for the sake of debris and contaminants in the oil. The filter will catch them, but that is only after they have made their way back to the pan and through the pump again. For a factory "new" car with a couple miles on it, whatever happened before I got it is out of my control so its ready to drive hard as far as I am concerned. For a fresh build that I did myself, I get the engine up to operating temp off idle and bleed the cooling system, then I change the oil. Just because a shop/home/DIY/etc engine build is going to introduce more contamination during assembly than a factory build.

Tadpole · 02-19-2015, 05:12 PM

Drive it like you stole it. If and when it breaks it's still under warranty.

02-19-2015, 02:07 PM	#17 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	I've heard both sides of the story, break in the way you drive/thank the kid at the dealer who did a burn out in your car... Then I speak to the engineers at work... They say 90+% of the break in is done in the first few strokes of the engine being on and within a few miles of the car being driven. BUT they all baby their cars as well, some say in case a bigger piece of metal flies off at 6k RPMs the oil may not have the chance to prevent it from getting sucked into something. They all said a few oil changes should be done very quickly. Personally, I'd say break it in properly. You just spent $30-50k on the car, why not spend some time breaking it in? And I'd do an oil change after like 100 miles, then keep driving slow to about 1000 and do another oil change. __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

02-19-2015, 02:19 PM	#18 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,668 Drives: 370 Rep Power: 974723	When I bought my Z, it had like 6 miles on it... so it was broken in before I got to it. I think my mustang had 12... thats more than broken in. The only reason I do not go immediate full throttle on a fresh fully built engine is for the sake of debris and contaminants in the oil. The filter will catch them, but that is only after they have made their way back to the pan and through the pump again. For a factory "new" car with a couple miles on it, whatever happened before I got it is out of my control so its ready to drive hard as far as I am concerned. For a fresh build that I did myself, I get the engine up to operating temp off idle and bleed the cooling system, then I change the oil. Just because a shop/home/DIY/etc engine build is going to introduce more contamination during assembly than a factory build. TerribleONE likes this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

02-19-2015, 05:12 PM	#19 (permalink)
Tadpole A True Z Fanatic Join Date: Sep 2013 Location: Lockhart, TX Posts: 1,082 Drives: 13 Nissan 370Z A7 Rep Power: 18	Drive it like you stole it. If and when it breaks it's still under warranty. __________________ Takeda TR3009P Short Ram Intakes, Custom Dual Exhaust, X-Piped with 18" Resonators & TopSpeed Axle Backs. EVO-R Led Third Foglight,