Not necessary. It does happen to our SkyActiv-G gasoline engines under cold temperature. Many gasoline engine CX-5 owners don't aware of oil dilution issue during winter time mainly because they don't bother to check oil level in cold weather and simply assume the oil level is fine like in summer time. Once weather is getting warmer, the fuel in diluted oil once again got burned off and oil level go back to normal. See this 8 pages of discussion:That's strictly a diesel issue.
Here's my 2 bits since I'm the one who started this thread.
This issue is only present if you live in a cold climate. Starting and idling the vehicle, longer warm up times, all add to the problem.
I've done a few oil samples and the winter months are terrible (as high as 11% fuel contamination). During the spring/summer the oil does not move up or down and the sample has been tested fine.
During the winter, my oil level definitely rises, I have tried blocking part of the rad off. Tried running premium fuel. So far anything I try does not help the problem.
The only fix I found is to NOT check the oil.
You might experience some FD in cold weather or if you are short tripping and not allowing the engine to operate at full temperatures. On average the Mazda engines seem to be better in handling the FD. Obviously the aforementioned Honda 1.5 is a real problem and the turbo may play a part, something we don’t have to worry about.
Yeah plus they contain less oil being tiny 1.5L engines so any fuel getting in means a higher ratio. Isn't like 5-8% within the safety range?
Yeah plus they contain less oil being tiny 1.5L engines so any fuel getting in means a higher ratio. Isn't like 5-8% within the safety range?
Look at the picture of analysis report under Post #1 under https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4341225/1
Dude only had like 4k miles on oil. If I'm reading this right, over 5% fuel dilution..... yikes!!!
Again thats for Honda's 1.5l turbo. I wonder how mazda's 2.5l T stacks up against the fight of fuel dilution.