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Discussion Starter · #1 · (Edited)
Okay so we're all well aware of the importance of proper engine break-in for the optimal performance and durability. We also know that overfilling the engines at the Honda factory seems to be quite prevalent, if not SOP (also at many dealerships). I'm wondering if this engine overfilling is preventing proper break-in, and if so is contributing to, if not causing the engine problems like fuel dilution that many of us seem to be experiencing. Do any of the experts here have any thoughts on the effect of overfill on engine break-in?
 

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'18 CR-V Ex-L AWD & '13 CR-V Ex-L AWD
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Until the oil level in the pan, is at a depth where the crankshaft is hitting and whipping it into foam, it doesn't matter.
Yes, I agree.
 

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Okay so we're all well aware of the importance of proper engine break-in for the optimal performance and durability. We also know that overfilling the engines at the Honda factory seems to be quite prevalent, if not SOP (also at many dealerships). I'm wondering if this engine overfilling is preventing proper break-in, and if so is contributing to, if not causing the engine problems like fuel dilution that many of us seem to be experiencing. Do any of the experts here have any thoughts on the effect of overfill on engine break-in?
I doubt it’s causing break in issues, but it’s certainly not good for the engine in general, and hurts efficiency. The higher the level, the more windage, and yes windage happens all the time not just when a crank is submerged in oil.
Higher oil levels also proportionately reduce crankcase air space. This reduction in headroom increases the piston- piston pumping losses, which are high to start with in this engine as there are only 2 pairs of displacement movements. All of this can certainly throw more oil on the lower cylinder walls than desired,
 

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If the dealer did a proper PDI (pre delivery inspection) there is a check the oil level in the PDI and a second require at delivery.

I have witness over 100 PDI for 2017 and 2018 CR-V's and Civics - not one was overfilled at the factory (some cars were from every site that makes Civics and CR-V's.)

I have seen the oil change places (including the dealers quick lube since they use high school dropout to do the changes) put 5 quarts in the 1.5L engine ( CR-V and Civics ).

3.5 quarts will dilute fuel a lot faster than 4.5 quarts.
 

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I doubt it’s causing break in issues, but it’s certainly not good for the engine in general, and hurts efficiency. The higher the level, the more windage, and yes windage happens all the time not just when a crank is submerged in oil.
Higher oil levels also proportionately reduce crankcase air space. This reduction in headroom increases the piston- piston pumping losses, which are high to start with in this engine as there are only 2 pairs of displacement movements. All of this can certainly throw more oil on the lower cylinder walls than desired,
And I thought windage happened when we get old...
 

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How does oil dilute fuel.:confused2:
 

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How does oil dilute fuel.:confused2:
Finally someone that uses logic on this board. My two cycle leaf blower uses oil to dilute fuel, 50/1 the last I looked. Oil in CRVs gets diluted by 2200 psi fuel injection directly into the cylinders which pushes some of the fuel past the rings.

Check out the ion plated piston rings and sodium filled valves along with higher boost pressures: http://hondanews.com/releases/40fde.../c3e64205-8528-46a9-a182-6fbdfee4a5a2?l=en-US
 

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Dayum!:Darn: All that oil, over many years, that I've poured into boat motors, motorcycles, chainsaws, string trimmers, leaf blowers, etc. was to dilute the gas?????.....Never too old to learn something new. LOL:banana::thumb:
 

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I doubt it’s causing break in issues, but it’s certainly not good for the engine in general, and hurts efficiency. The higher the level, the more windage, and yes windage happens all the time not just when a crank is submerged in oil.
Higher oil levels also proportionately reduce crankcase air space. This reduction in headroom increases the piston- piston pumping losses, which are high to start with in this engine as there are only 2 pairs of displacement movements. All of this can certainly throw more oil on the lower cylinder walls than desired,
And I thought windage happened when we get old...
That too ?
 

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If the dealer did a proper PDI (pre delivery inspection) there is a check the oil level in the PDI and a second require at delivery.

I have witness over 100 PDI for 2017 and 2018 CR-V's and Civics - not one was overfilled at the factory (some cars were from every site that makes Civics and CR-V's.)

I have seen the oil change places (including the dealers quick lube since they use high school dropout to do the changes) put 5 quarts in the 1.5L engine ( CR-V and Civics ).

3.5 quarts will dilute fuel a lot faster than 4.5 quarts.
i was thinking about the PDI....you would think everything would be checked and adjusted to specs(trans,rear ends etc etc) as we pay for that don't we....and I can tell ya 5 quarts overfull is way high on the dipstick,they did that on the first oil change and had to go back in 2 more times before I would except it..no way was I driving off the lot like that... since then I carry 2 dipsticks in the CRV and the modified one is dead on with measurement and easy to see.............
 
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