Engine oil.

[piunit_imp]

My Ural, the poster child for low tech, requires 2,500 km intervals for oil changes - paper filter, air cooled Russian airhead, very poor machining specs, lousy metallurgy straight from the factory. Oil always dirty and "swarf" on the magnetic drain plugs.

My original Hondas were also 4 cylinder air called bikes and I changed oil every 5,000 km or 3,000 miles.

The current generation of bikes from Honda are marvels of modern machining and engineering, impressive bikes. I will do 5,000 mile service intervals. I can only speculate that strict pollution standards in Japan require more frequent service intervals.

Hi 4 Paws.
You have a Russian classic bike. Right? It sounds interesting!
Japanese vehicles are high quality, so I can ride or drive them here in Japan but usual dealers recommend that I change earlier than I change.
Of course it must be better but it costs money. Ha ha
So I will change oils about every 5,000 or 6,000 km in the future too.

I change mine between 5 and 6k miles usually. Have used 6k as the benchmark on most all the other bikes I've owned.

Hi Motogeezer1949.
I will have the interval of 5,000 km or 6,000 km in the future too.
I think dealers and oil makers always recommend to decrease the interval but I guess they must recommend to get more profit. Ha ha

That's true. but in the great world of oil there are believers in various prejudices. I had a VW diesel for which the manufacturer recommended a 10,000 km or 12 month service interval. The local mechanic I took it to assured me the oil should be changed every 5,000 kms. He assured me he'd done lots of reading on the subject and the gurus agreed with him. I'm sure some do, but I'm also happy to trust manufacturers' recommendations on these things.

That's true. but in the great world of oil there are believers in various prejudices. I had a VW diesel for which the manufacturer recommended a 10,000 km or 12 month service interval. The local mechanic I took it to assured me the oil should be changed every 5,000 kms. He assured me he'd done lots of reading on the subject and the gurus agreed with him. I'm sure some do, but I'm also happy to trust manufacturers' recommendations on these things.
Hi Cormanus.
Thanks for advising.