Te 310 suggested oil

Thank you Soderberg for telling your experience with xlites oil. I've never heard an oil brand called midland here in Italy, but if it has worked well on 3 310 it should be good stuff. Since every now and then while working on computer I remember the oil worm and I look desperately for more information I came across this blog which has now become my motor oil bible:
https://540ratblog.wordpress.com/
Look at the rank of the new mobil1 fs 0W40, amazing performance oil even better than the 300V (and any other motorcycle specific oil tested) !!

A short story about Midland is that Oel-brack AG (Switzerland) started in 1880, made Quaker state for the european market for more than 10 years and sold QS for 60 years. 2003 they launched their own brand ”Midland” for the Scandinavian market. Perhaps also Germany and other countries in northern Europe, but that I dont know. Since then Quaker state is no more sold by Oel-brack. Their products is high end and used by several racing teams in Sweden.
Ola

Thank you Soderberg

First oil change done: drained all the original oil, installed the drain back kit, put a pc racing stainless filter and 900 ml of M1 0W40. On the pc racing filter i flipped the grommet to have the same lenght of original husqarna hf 116 paper filter (35 mm).
Now I'm quite ready for the first start, hoping that everithing is fine.

Bike started for the first time saturday and runned great, everithing seems to be fine. As soon as bike is finished, missing some little parts like transmission and handguards, I will post some pics of the bike finished and some of the rebuild work. Thaks guys for your kind help

The important thing with these X-lite engines is flow flow flow. they make enough oil pressure to float plain bearing surfaces even with the lowest viscosity oil. The flow is super important for start up to get those plain bearings on an oil cushion as stated but also for its fast moving cooling effect as well. I always loved mine but for me they were a little too delicate, but with lots of TLC and some good bullet proof mods they hang in fairly well under hard conditions.

my rough cut away drawing of the X-Lite Oil filter placement.explaining what I found years back.

Thanks robertaccio for sharing, nice clear explanation

First oil change done after 45 minutes o heating cicles (I wanted to ride it but I was missing the front sprocket, dealer sent me a wr 300 one) and thank goodness that I changed it. Oil was already dark full of metal contaminations and oil filter was full too of metal debris both steel and brass color (bushings). I refilled with 940 ml of M1 and the second pc racing new filter, I hope to find less debris the next oil change. Below some pictures of oil, oil filter and a litlle preview of the mighty 310R

View attachment 99999
she's coming