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In the legal warranty, the manufacturer cannot prescribe which oil to take, as long as it corresponds to the specified authorisation. However, we have a voluntary Honda warranty of 6 years which can only be used if you stick to the conditions. Since it is a voluntary guarantee, the manufacturer...

Right. My guess is that these are residues from production, otherwise the molybdanum would not be explainable. Due to the warranty provisions I will have to stay with the pro Honda 10W30. But the bearing games show me that even a sae20 oil could / would work here.

Here is an oil analysis of my new Honda CB750 Hornet. Machine was nicely driven in on the country road, next week comes the 1000 kilometre service.

This is easy to explain. The formula with APi SN Plus and APi SP as well as newer SQ do not start with FE and AIuminium with 0ppm. Therefore, I consider it necessary to always have a fresh oil reference or an oil analysis after a fresh oil change. In this way, the exact element concentration on...

Here is again an overview of all analyses of this engine, which also shows how high the element concentrations were calculated for 1000 kilometers.

My Civic 1.8 ( r18a2 ) is from 2008 and since mileage 20000 is operated exclusively with mobil 1 0W40. The car currently has 503000 kilometres down and has actually always driven 20000 kilometres intervals. The engine looks like new inside. I mean that my engine has not changed in terms of...

Each company offers different tests. This is a decision of every laboratory, there may also be price differences.

Can anyone explain why most motorcycle oils are based on partially synthetic or even mineral oil? Are there any other advantages than the cheaper price compared to fully synthetic oils?

This is my engine oil.

GN4 is Not the same as the pro Honda 10W30. Here in Germany we have the same bottles from pro honda.

Yes, but my Engine oil analysis was from the JASO MA 10W30, but the Name is the same, Pro Honda engine oil.

The noack you can see in the technical Data sheet, 6.0 by 5w40, 3.7 by 10W40.

For me not such tests not meaningful. However, the specifications of the Liqui Moly oil are absolutely up to date, plus low Noack and at the beginning of a sae40 oil.

Why Ravenol at all?

Today.

I changed the oil about every 350-400 operating hours. Some others here in Germany get already at 200 operating hours heartache or quirks funny analyses after 3000 kilometres. They are almost not meaningful at all. I think my 500k kilometres prove quite well that it is possible to leave oils in...

So the Honda branch has done the very great service. Oil, engine coolant, air and pollen filter, brake fluid and spark plugs were new. The valve play had to be adjusted, it was too tight. Possibly the last dealer had carried out the adjustment incorrectly. Now I don't have any speed fluctuations...

Since I can't be there at the service, I'll ask my dealer if he can take a picture. It will also be interesting whether the valves have to be adjusted. Another dealer told me at the time that you don't have to adjust any more valves after 300k, because nothing can be adjusted anyway. I find this...

I think this is one of the biggest private long-term tests with always the same oil at 500k kilometres. Next week we will submit the compression measurement of the engine. From mileage 20k only Mobil 1 New Life / FS 0W40 was used, also when refilling oil!

Here is a table where you can see where the element concentration is calculated per 1000 kilometers.