Vishnu....thanks for your insights and thoughts.....
I have ridden enough bikes to understand that all the oil in the engine cannot be drained....and some engine oil remains in the engine....
If you read the Suzuki GS150R user manual carefully it suggests very clearly that...when you start the engine...run the engine for some time...and then switch off the engine and wait for 3 minutes and then check .....then the Oil level should be between the LOW and FULL mark.....
But when I checked in the SVC..I had waited for more than 5 min….it was at the LOW mark....so only I raised the issue....
Also when they drained the oil from the engine....in order to get the maximum oil out of the engine....the guy drained it for about 20 mins...tilting the bike all the possible angles whichever you said.... 20 mins draining is sufficient I suppose..to get enough oil out of the engine....
I had changed the oil of my bike at 400 kms....I had done it myself...and changed when the engine was more warm...as more oil drains out when it is warm....again as per the manual....after changing...I had checked the Oil level and it was near the FULL level mark....
Suzuki people also for the same reason have put in the book that 1000ml should be used....if you drain the whole engine of oil it will be nearly 1200ml....and we have to put 1200 ml of oil back if you are draining the whole engine.....and I have done this many times in my previous bike ....
So as 200 ml of oil mostly remains.....in the engine and that cannot be drained generally....the company tells to put 1000ml only....
so as I said above the engine oil level was near to LOW mark....whatever the Oil filter changed or not...200 ml oil deficiency is more....no oil filter holds 200ml of oil....
And coming to my over sensitivity.....I do not give a DAMN....what any stupid SVC guys thinks about me....I am only and only concerned of welfare of my bike.....
whatever the SVC guy or the manager thinks about me...I really do not care....when I shout at them or anything....
Also when anybody is cheating and to protest against it is a human fundamental right...I do not think I should think about my dignity and credibility when fighting for the right thing.....when it is my fundamental right....
So anyway thanks again for your precious suggestions and insights....



and 1.5 years of riding
, i didn't experience this even once.

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