I just bought swift 20 days ago and now showroom guy confirmed me that 2 year warranty is only valid if i use their engine oil 10w40 one..i wanna use havoline synthetic as i m not sure what Suzuki is mixing in oil can...how can i maintain my warranty even without using their oil..my friend is using thus sgo and he says its very good never had issues in the past 1 year or so with cultus
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