Honda Car Forum

2001 Civic LX - Supposed to use 5W-20 (I think that's what it says o
the cap). I used 10W-40. It's what a mechanic recommended

Not the 1st time I've used a diff oil than spec. Just wondering i
there can be bad consequences if I use the wrong motor oil

Also, what exactly do those numbers and letters stand for? I think i
refers to viscosity but I don't remember which number

Steve
Your mechanic is thinking old schooll still! when thicker oil was ok
to use at one time "10w40" would be ok back then on a 1970"s car NOT! on today
engines! with tighter tolerances using a thicker oil can do more harm than good!
todays thinner 5w30-20 mineral or synthetic oils are much more better formulated
and advanced for your engine than ever before steven for your honda if it calls for 5w20 to be used use it your engine is designed for it dont take chances use wha
HONDA specifically calls for you to use on your vehicle

--
johnin

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