Break in Period

[Xerious]

Done!



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[Akari]

I near redlined mine about once every 100 miles with low engine load for the first 1,000 miles.

I didn't find it all that bad, although I also drove the first 1,000 miles in the first 24 hours that I owned the car.

[Chad86]

Aren't you also not supposed to go above 80km/50mph during break-in?

[86-tundra]

Hooned it from the start. Break in is a myth IMO. I guess we'll see.

definitely didn't break in my FJ. it had less than 800 miles on it before it got stuck doing mud donuts. No engine problems in sight, 5 years later

[cjsporl1996]

http://www.mototuneusa.com/break_in_secrets.htm

Personally many older mechanics and many performance shops that I know of run the engine pretty hard during the break in process on a engine dyno. The purpose of running the engine hard is to seat the piston rings. Which helps reduce oil consumption. When I broke in my 350 I did several hard runs for the first 500 miles and tried not to keep the rpms steady. As for the brz I did the exact same thing and it is running perfectly fine at 11,000 miles no oil consumption. But then again I think this matters more on older engine designs than modern engines.

[FunCon5]

Just turned 142,500 on my Honda Ridgeline. I bought it with 11 miles. I have floored it almost every mile. It does not burn oil. I was nicer to my FR-S, only driving it hard for a few seconds in the first 1000 miles. We will see...

[TrayT]

I took it pretty easy on the engine for the first K, with some "look what MY car can do" zips around the neighborhood, keeping it under 4000 RPM. Never took it over 70mph, easy starts, etc.

I was told different things about the break-in period by different people when I got mine. The salesman said "don't use the cruise control until 1000miles." Detailer/Delivery guy said "don't drive the same speed for too long until 1500miles, and don't go over 80 until then."

Went in today at 1500miles to get an oil/filter change, and the Service Advisor gave me a very condescending speech about "you know, these cars don't need their first oil change until after the break-in period at 7500miles right? You've only owned this for like, 30 days you know? I guess if you want to burn one of your free service appointments, we'll do it.. "

[Chad86]

Originally Posted by TrayT

I took it pretty easy on the engine for the first K, with some "look what MY car can do" zips around the neighborhood, keeping it under 4000 RPM. Never took it over 70mph, easy starts, etc.

I was told different things about the break-in period by different people when I got mine. The salesman said "don't use the cruise control until 1000miles." Detailer/Delivery guy said "don't drive the same speed for too long until 1500miles, and don't go over 80 until then."

Went in today at 1500miles to get an oil/filter change, and the Service Advisor gave me a very condescending speech about "you know, these cars don't need their first oil change until after the break-in period at 7500miles right? You've only owned this for like, 30 days you know? I guess if you want to burn one of your free service appointments, we'll do it.. "

Isn't the first oil change due at 1,500 miles?

[Chad86]

Originally Posted by TrayT

I took it pretty easy on the engine for the first K, with some "look what MY car can do" zips around the neighborhood, keeping it under 4000 RPM. Never took it over 70mph, easy starts, etc.

I was told different things about the break-in period by different people when I got mine. The salesman said "don't use the cruise control until 1000miles." Detailer/Delivery guy said "don't drive the same speed for too long until 1500miles, and don't go over 80 until then."

Went in today at 1500miles to get an oil/filter change, and the Service Advisor gave me a very condescending speech about "you know, these cars don't need their first oil change until after the break-in period at 7500miles right? You've only owned this for like, 30 days you know? I guess if you want to burn one of your free service appointments, we'll do it.. "

Can anyone confirm the varying speed break in? I guess this is like how you shouldnt just drive short drives and drive highways as well.

[humfrz]

Originally Posted by Chad86

Isn't the first oil change due at 1,500 miles?

The manual for my FR-S (US) states 7,500 miles or 7.5 months, whichever comes first. Half that under severe conditions......


humfrz

[humfrz]

Originally Posted by Chad86

Can anyone confirm the varying speed break in? I guess this is like how you shouldnt just drive short drives and drive highways as well.

It's my understanding that during the break in period, that the RPMs should be varied (not to hold a constant speed for any length of time). Also, don't make a habit of exceeding 4,000 RPMs. Allow engine braking when possible (letting off the gas to slow down).


humfrz

[Chad86]

I have always rev matched my Celica. Is this good or bad to do as part of the break in period?

[humfrz]

Originally Posted by Chad86

I have always rev matched my Celica. Is this good or bad to do as part of the break in period?

That would be just fine.....

Hey, @Chad86 ..... you don't have to get all obsessed with this "break in" procedure ..... this engine is not made out of glass .....

Relax, enjoy the drive .....


humfrz

[86viper]

FWIW, our 86/brz club here in AUS just had a dyno day with over 25 cars running. The ones making the most power were the ones driven the hardest. The babied ones made the least. Will the ones driven hard last as long? Time will tell, but they certainly made more power.

eg - 2 completely stock cars, dynoed just mins apart, 104rwkw to 112rwkw (our aussie dyno's read low) But 8rwkw difference is alot for zero mods