Suzuki will back warranty as long as you use the correct oil and filter and observe the service times
So, do it yourself, just keep a record of what you used, which should be a mineral oil
You would have to satisfy Suzuki that you were competent to do the 1st service. By only changing Oil and Filter you would show you aren't.
Why stick with mineral oil? Shorter intervals between oil changes. Most, including Suzuki Dealers, use 10-40W Semi Synth after the breaking in period is completed.
From Ash on Bikes...
Don’t mollycoddle your new engine with expensive oils either. Running in oils are rare and completely unnecessary on a modern engine, but here’s a shock, don’t splash out either on a costly fully synthetic oil until your engine’s covered at least 5,000 miles (8,000km). This comes from the highest authority, Castrol, who would love you to buy the company’s expensive synthetic oils...
This is why the Castrol boys know what they're talking about
Peter Brett says that they’ve discovered synthetic oils actually interfere with running in, for reasons which go beyond their low friction properties - there also seems to be a chemical process happening which hinders it. “Although you can treat an engine as fully run in after 500 miles, surface stabilisation continues for at least the first 5,000 miles of an engine’s life,” he says. “Synthetic oils actively prevent this from happening, and not simply by holding friction surfaces apart, although we still don’t know exactly why and how this happens. But there’s no doubt they inhibit the process itself. So the consequence of using a synthetic too early is your engine will never run in properly. I would even suggest waiting until 10,000 miles (16,000km) before using it in most engines subjected to normal use. Until then, you’re best to use an inexpensive but branded mineral oil.”
So, save money by using a cheaper oil when your engine is new, it will run in properly and you will improve its longevity, power output and oil consumption. Can’t be bad, and that comes from people whose interest is in selling you expensive synthetics.
It’s worth noting that when you do reach the mileage where a synthetic will start to be of benefit, only use a fully synthetic if it’s specifically designed for motorcycles with wet clutches (unless your bike has a dry clutch anyway, eg Ducati, BMW, Guzzi) or you’ll suffer clutch slip. Otherwise go for a semi-synthetic, but even then check it’s suited to wet clutch systems.
