--------------------------------Video description-----------------------------------
00:00 - Introduction
01:54 - The disadvantage of direct injection
03:22 - The consequence of petrol in the oil?
04:34 - How does increased content of petrol in the oil affect the engine?
04:37 - High-pressure pump
06:07 - Injector
06:43 - Oil rings
08:06 - Symptoms of an increased amount of petrol in the oil
08:51 - Crankcase vent (PCV)
11:49 - Test methods to reveal excessive petrol in the oil
12:41 - The flame test
15:21 - Road test of a Honda 1,5 VTEC to reveal how long time it takes to heat up the oil
18:11 - Test methods to reveal excessive petrol in the oil
23:58 - Conclusion
Road test of Honda 1.5 VTEC 2020 to measure how long it takes to heat up the oil
How we can prevent the problem/summary
Oil dilution problems are increasing in engines with direct injection and unfortunately cause several serious faults in an engine. We will show some test methods that can be used to reveal an excessive petrol content in the oil, and how the phenomenon occurs. The test may be relevant at e.g. LSPI, wet belts, chain extensions, catalytic converter problems and faults related to lack of lubrication. In fact, we only wanted to find a good method to test whether the petrol amount in the engine oil was too large, but we found that there was a need to also explain what might cause excessive petrol in the oil. If you have more knowledge about the problem, please send it to us so we can share it with others in the automotive industry.
If wanted, see bulletin No. 7280 in DDTSB. (www.ddtsb.com)
Link to AutoFrontal closed Facebook group: https://www.facebook.com/groups/ddtsb
The following links also describe the topics discussed in this video:
How Direct Injection Affects Motor Oil
https://www.youtube.com/watch?v=tPyMefpgLfg
How Direct Injection Affects Motor Oil Part 2: Low Speed Pre Ignition
https://www.youtube.com/watch?v=c61lBa7l_9E
Why engine oil gets diluted with fuel | Auto Expert John Cadogan
https://www.youtube.com/watch?v=nMX94zarLs4
High-pressure pump:
https://youtu.be/mFgYTnlStsM
https://www.lubricants.total.com/news-press-releases/fuel-dilution-engine-oil-causes-and-effects