Originally Posted By: harrydog
I have a 2013 Accord Sport (DI engine). Right now I'm at around 1300 miles and 90% on the MM. I've always changed the factory fill in new cars at 1000 miles or even earlier and have never had any problems. One of my previous Honda's had 216,000 on the odometer and didn't burn any noticeable amount of oil in 5000 mile OCI's.
I understand the reason being made as to why you should leave the FF in until the MM is at 15% but these arguements are being made by folks on the internet, not necessarily by qualified experts.
My owners manual makes a reference to changing the oil when the MM indicates but it is somewaht vague in my opinion and doesn't specifically mention the FF.
If leaving the FF in until 15% is so important, why isn't it spelled out more prominently in the manual? (If it is there somewhere, please let me know the page)
I asked two dealers in my area and both said they recommend 5000 mile oil changes and nothing different for the FF. I even called Honda USA to ask about it (even though I knew I probably wouldn't get a knowledgeable person)and they said they saw no reason why it couldn't be changed earlier. They also referred me to my dealer if I wanted a more "technical" answer.
So, if this is so important for proper engine break in, why is it not spelled out more prominently in the manual? Why are the dealers not informed about it? Where are you guys getting this information from?
Just follow the manufacturer's recommendations. I went through is with our 2011 V6 VCM because I was aware of some issues with the VCM engine. I did the first two OCs at 15% which worked out to 6300 miles. I used Honda Genuine Full synthetic for my changes and I tested each one. Now, this is not a DI engine so its a different animal and you should do your own UOAs to get comfortable. But, what I found is, Honda adds a moly-impregnated coating to their piston skirts (not their FF). The moly gradually dissolves over the course of the first oil interval. This higher klevel of moly is important to the long term reliability of the VCM engine. It turns out the HG oil has amuch stouter add pack than the fabled FF so, realize there is nothing special about the FF oil, it's about the moly impregnated skirts. But a DI is a different deal. Follow Honda's recommendations then use a good synthetic replacement oil.