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Every 3,000 miles Ford recommends every 5,000 miles with normal oil or synthetic blend. You can go up to 7,000 if you use full synthetic.
10 W 30 oil. Full synthetic would be best.
If it is the synthetic blend, you should change the oil every 3,000 miles. If it is a full synthetic, you should change the oil every 5,000 miles.
Full synthetic 0w-40
You can mix part synthetic oil with full synthetic oil.
I usually use 10W-40 full synthetic for summer season and 0W-40 full synthetic for winter season.
Who told you it was not good? You can and should use full synthetic in a 150cc air cooled engine.
5w30 full synthetic
Not just can, but should. Ford recomends full synthetic for both the V6 Duratec and the I4 Zetec.
mobil 1 5w30 full synthetic
SAE 5w30 Full Synthetic.
Full Synthetic 5w-30