Question about 2003 Ford Focus
I have a Ford Focus 2003 1.8 TDCi. Ford recommends 5W-30 oil and some say even 5W-20. My car is a 10 years car now and I just wonder should I go with 5W-30 or 10W-40? Also what brand to use Mobil1, Castrol, Shell? Thank you
Generally speaking, we do not make recommendations on products by brand. Any of the brands you mentioned will meet the factory specs.
If the car has over 100,000 miles, you could bump up the weight to 10w-30 or 10w-40. Or stay with the factory recommendation.
The low number is the weight of the oil at zero degrees, and the high number is the weight at 200 degrees.
Keeping the oil and filter changed is more important than the weight.
Posted on May 10, 2013
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Posted on Jan 02, 2017
I ask that same question about my 2007 and was told that the main reason for the lite oil weight was to give better gas mileage. Still though I never changed because I got over tinkering with the manufactures specs. in my hot rod days. Stay with the 5-20W.
Posted on Apr 27, 2009
Of coarse they did. They only have oil in a big tank. One size fits all.
Educate yourself and stop listening to all the nonsense.
Walk into the service bay at a dealership and ask a tech what they use 5W-20
Posted on May 03, 2010
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