Hi,

I just went to www.castrol.uk.co (Catrol's web site in UK) and clicked on (bottom left corner) link "what oil should I use". I found out that for 2003+ 4cyl Accord Engine (I-vtec etc.) they recommend 0W-40 oil while here (US) 5W-20 is recommended.

Now, I know I have been going on about this but this really makes me believe that the only reason we (in the USA) are being told to use 5W-20 is for fuel economy purposes while Euro market gets (a better) recommendation to use oil that is better for the engine's longetivity?

Can anyone explain this to me? Am I missing something?

Thx

 

the oil weight rating determins the thickness of the oil.
10/30 for example has a viscosity rating of 10 when cold and 30 when warmed up....(both at a standard temp)....
Usually climate determins which oil you should use....

 

different climates.

 

Thx

I will be using 0W-40 in my cars from now on.

 

do you live in europe? in europe they drive much faster, higher engine loads. there are different climates. hondas know their engines, put in what they tell you.

 

Why would you do that?

 

Hi,

Finally I decided to go with Mobil1 5W-30 Synthetic. I just think 5W-20 is too thin and introduced only for CAFE (CorporAte Fuel Economy) reasons.

 

i personally would go with 5w30 or 10w30 depending on my climate at the time. tho right now it's winter and i'm running 10w no problem...

 

Would it be the same regardless of year? I'm using 10/40 on my '94 accord, should I switch back to 5/20?

 

where in the us do you live... i'd stick with x-w30 x either being 5 or 10 depending on your climate, 5 for colder climates (temps go below 20 during cold season) or 10 for warmer climates