I dont own an alto..but one thing is for sure that the oil now adays sucks...
I got my oil changed at 5 k .from Toyota Central.nd after 1k more on my corolla. . Its like feels ajeeb sa...
I asked 2 other people in my area who own the same car...nd they say that we also felt that ...they got the oil changed to ZIC.. and now the issue is gone..but u need the 5k stamp from Toyota on ur car coz of resale and warranty issues. ..
My car has done less than 10k... agar to be exact 6500km... I will change it at 7k..
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