Proof of oil change

[Pauljp]

Today someone asked me how do I prove to the manufacturer that I did an oil change as per the owners manual.
My Honda HRN216PKCA lawn mower uses 10 oz of oil and there is no filter.
I have the receipt for a jug of oil that will last me 15 oil changes or about 8 years.
If something were to go wrong and I had to bring it to the dealer, how can I prove to them that I did all the oil changes.
I keep records of the hour meter, date, type and brand of oil. But is that proof enough for them?
I have been changing oil almost all of my life and I have never had a problem, but someone today asked me and now I am asking you.
How do you prove it?

 

[Rivets]

My question to them is why do you need proof. Most small engine warranties last from 2-5 years. Only thing that comes to mind for someone to ask for oil change proof in that time frame is a major internal failure. An experienced and knowledgeable service tech should be able to diagnose the cause without proof.

 

[bertsmobile1]

You don't need to
The engine will tell me if you have been changing the oil or not .
You get distinctive wear patterns and sludge build up if you have not been changing the oil enough ( note enough may be substantially less than recommended ) .
Engine parts get tell tale colour changes if they have not been getting enough oil

 

[Pauljp]

Excellent responses guys, thank you. That is exactly what I am going to tell him.