Does anyone here feel it necessary to follow the owner’s manual requirements for their new car after spending a ton of money on said car?Does anyone here feel it necessary to "Break In" a new Engine.
I don't
Does anyone here feel it necessary to follow the owner’s manual requirements for their new car after spending a ton of money on said car?Does anyone here feel it necessary to "Break In" a new Engine.
I don't
If a vehicle uses no oil at 35K miles its not gonna start because of breakin issues. There is probably a linear curve of consumption vs age...with modern cars say 1/2 quart/7K miles new and maybe1 quart/7K miles. Like I said 48K miles on my '18 and NO Detectable oil use. Three other vehicles no use at say 35K miles. I like their chances.There is a lot of supposition in that post - “generations” of machining? Rings “seated”? Oil consumption tells you everything you need to know about the engine? You don’t keep your cars long enough to know if you did it right, or wrong. A car that doesn’t use oil at 25,000 miles isn’t impressive in any way. A car that doesn’t use oil at 200,000 miles was broken in properly.
Follow the OM.
They know what “generation” the machining might be and how to “seat” the rings. Do what they recommend and you’ll be fine.
I would just drive the vehicle easy for the first 1-3,000 miles no rule of thumb just my preference.Does anyone here feel it necessary to "Break In" a new Engine.
I don't
No. The maintenance minder on my Civic won't indicate the need for an oil change until 10,000 miles, and this includes the first oil change. I changed the oil after 2000 miles.Does anyone here feel it necessary to follow the owner’s manual requirements for their new car after spending a ton of money on said car?
Same. When I 'break in' a new engine, I pretty much drive it the way it's going to be driven.Basically just normal driving without babying the engine, nor thrashing it.
If a vehicle uses no oil at 35K miles its not gonna start because of breakin issues. There is probably a linear curve of consumption vs age...with modern cars say 1/2 quart/7K miles new and maybe1 quart/7K miles. Like I said 48K miles on my '18 and NO Detectable oil use. Three other vehicles no use at say 35K miles. I like their chances.
Kind of a moot point though except for the Forester. Well see hopefully how it does in another 5 years (if Im alive..lol. ) FWIW i redline (ed) all vehicles frequently. The GR86 probably every day...spimds moce at 7500 rpm!! 5 k miles on it, oil looks like it was changed yesterday. Things could change.
That’s why I use social media as a form of entertainmentSo let me get this straight. Not following the OM break in procedure is ok, but using a 30 grade when the OM recommends a 20 grade voids the warranty…..
Who said that?So let me get this straight. Not following the OM break in procedure is ok, but using a 30 grade when the OM recommends a 20 grade voids the warranty…..
No one in particular. Just some food for thought.Who said that?
Al, often stated but this is not generally true. Machining quality and tolerances have been tightly held and scrutinized in production since The Ford Model A. There have been gains in Materials science and specialized alloys and casting.... .
Obviously the breakin rules started in the 50's or earlier when machining was a couple generations earlier. You esentially completed the machining that a new car bought today comes with. ... .
Yep, both my 98 and 01 Z28 were hammered straight off the lot. Had the 01 on the Dyno with 151 miles on it. Track next weekend and it went 12.92 at 110.02 mph with paper tags and about 330 miles on it. I put 160,000 miles on thing never used a drop of oil. I treated the 98 worse ran that that up to 156,000. Never used any oil. I was 23 when I bought the 98.Go back 20 years prior to that and I bought a brand new 98 Firebird Formula. I did NOT baby that car at all! In the first 50 miles I had already redlined it in the first four gears. I then took at least 4 or 5 of my friends in separate rides where I also went full throttle through the first 3-4 gears. A week later I took it to the drag strip and made about 15 passes. That car was a strong running example, I feel like that hard break in might have just unleashed a few extra ponies![]()
Likely true down to individual parts - but you can't touch these 3 axis and 4 axis machines (Skippy chime in) with what we had decades ago - especially the short block where all dimensions need to work in concert - In fact accurate/concentric enough to use thinner lubes by far ...Al, often stated but this is not generally true. Machining quality and tolerances have been tightly held and scrutinized in production since The Ford Model A. There have been gains in Materials science and specialized alloys and casting.
I would actually say the reverse now applies to most commodity passenger car engines with a Net Build strategy using non selected/ or assembler matched parts in critical positions (think Piston-to-bore). Only incoming material inspection of tolerances is employed.
The No fire wet spin up test booth will catch major mismatchs, errors and damaged parts to a fair degree.
Not everything is assembled with care and attention like a Nissan Godzilla turbo 3.8 V6 or a Corvette Z-06 LT6 DOHC 5.5 liter
Break it in the way you wish. Most of the time it's the luck of the draw. Moly rings and a medium-fine hone make it easy.
- Arco