Question about 2003 Ford Focus

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What oil to use for a 10 year Ford Focus 2003

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

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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 Feb 08, 2009

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SOURCE: Use of recommended oil viscosity (5w-20)

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

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SOURCE: Engine stalling Ford Focus 1.8 TDCi year 2002,

EGR Valve and dpfe sensor control idle.

Posted on Nov 05, 2009

SOURCE: I have a Ford Taurus 2002 with a 3.0L DOHC V6 and


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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SOURCE: ford focus tdci 1,6 year 2006 ,please help me dtc

code 21 is camshaft position timing. Timing improperly set or solenoid stuck open.

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Need to know what kind of oil used in 2002 ford focus.

Harold, According to the 2002 Ford Focus Owner manual,
With engine oil filter change : 2.0 liter SPI engine takes ( 3.78 liters / 4.0 U.S. quarts of 5W-20 )
2.0 liter Zetec engine takes ( 4.25 liters / 4.5 U.S. quarts of 5W-20 )
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What weight oil should I be using???

now ford has came out with a memo recommending 5w20. Ford Motor Company reports that the company's switch from recommending 5W-30 viscosity motor oil to 5W-20 viscosity motor oil has saved 700 million gallons of gasoline since 2000. By reducing load and internal friction, lighter viscosity 5W-20 motor oils reportedly increase fuel economy by a half mile per gallon. In addition, Ford reports its use of 5W-20 oils has reduced carbon dioxide emissions by about one million metric tons a year.
Note: Ford issued a TSB (technical service bulletin TSB 02-1-9) regarding the 5w20 superseding 5w30 Owners Manual specifications. Applies to the majority of the car products back to the early 1990's.

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2003 FORD FOCUS 2.0L 4-cyl Engine Code [3]
Engine Oil Grade 1......API* All TEMPS......SAE 5W-20, Engine, with new oil filter 4.3 liters.
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Why not? Of course it can! What could happen to (any) engine because of that? A little bit worse (1 to 3%) fuel efficiency since 5W-30 is thicker than 5W-20! But, I'd ask you right now: Why you even consider synthetic blend? If you think that synthetic part (max 30%) in blended oil is going to improve mineral part you voluntarily admit that synthetic is better. USE (FULL) SYNTHETIC and have all the benefits - better mileage, extended drains, cleaner engine, better winter start, smoother operation... Want more? Why to waste natural resources if you can have simpler and better maintenance with synthetics? Do not forget good air and oil filters! They keep engine's longevity! If you want recommendation(s) - use Amsoil (XL oil for 7500 mi) or Mobil (extended). All others are (poorer) copies of them! For the filters - again Amsoil! Absolutely better than K&N! Same air flow and 50 times (!!!!!) better filtration. (If you need more info call 519-739-3765)

Oct 23, 2008 | 2000 Ford Focus

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You need 4,6 qts of 5W-20 motor oil. If I were you I'd start right now to use synthetic oil. If you decide to do it - go with "The First in Synthetics" and the best: Amsoil! 5W-20 XL motor oil gives you (guaranteed) protection for 7.500 miles. (Do not fall for warranty cancellations or similar dealership spam. Magnuson-Moss act prohibts cancellations based on brand). Read this: or this: and try to avoid Fram filters. It seems that any other filter is better than Fram. I'd recommend Amsoil, Wix, Carquest (made by Wix), Mobil...

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