Question about 2004 Hyundai XG350

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What grade oil should I use for my 2004 hyundai xg350L? Also would it be better to use a synthetic blend?

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5w30, drain all your oil and change filter before upgrading to full or a synthetic blend. Car runs better and longer before changes on full synth.

Posted on Aug 26, 2010


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What grade of engine oil is best to use in 09 plate 1.4 kia rio chill

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What kind of oil do i use for a 2000 dodge carivan?


You will need to use a 10W-30 grade engine oil, such as any of the following Mobil products.
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spacer.gif Mobil 1 High Mileage 10W-30
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What would happen if i used a synthetic blend or a full synthetic oil in my 1994 geo metro even though it has high mileage and used generic oil will it hurt my enginei want to use mobil 1

No it will not hurt your engine at all. Actually it will give you a performance boost and a mileage increase.

But, it will also probably cause some leaks that you didn;t have before. Synthetic oil molecules tend to be smaller than their conventional counterparts and if you have any weak gaskets such as the valve cover gasket or the oil pan gasket it will find a way to leak from it. I would try it and if you experience any leakage you can switch back to conventional.

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Oil weight

Do whatever the owner's manual says. Full synthetic is better than a blend, it's all a matter of how much you want to pay.

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1 Answer


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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