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Old 11-26-2018, 10:51 PM
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Riverrat73
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Question Oil Needed

Good afternoon, I have a 2009 gtcs cv and wanted to know if I really needed to use the ford motorcraft oil as stated on manual. I have not been using it since I got the car a year ago. Only what ever brand of synthetic blend used at place I use to change my old. Is it a really big difference or pretty much the same???
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Old 11-27-2018, 06:15 AM
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08'MustangDude
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I don't use synthetic blends, just synthetic. Whatever the oil fill cap says, weight wise,
I use in Castro Edge. So, my V6 says 5W30, so I use Edge, If the Magnatec is available,
I use that. Usually, something is on sale at Walmart in 5W30, synthetic... Mobile 1,
Edge, is what I use mostly.
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Old 11-27-2018, 10:40 AM
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Dino Dino Bambino
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I'm currently using Castrol Magnatec 5W-20 full synthetic.
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Old 11-27-2018, 01:48 PM
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Derf00
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As long as the oil you are using meets the Ford Spec in the manual, you can use what ever you want.... That being said, I used Castrol full synthetic too (5w-30). Slightly higher than the 5W-20 recommended by Ford because of the higher year-round average temps here in the Phoenix, AZ area.
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Old 11-27-2018, 04:24 PM
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GT Nate
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Mobil One Synthetic in the grade the oil cap states. Never an issue. Car runs fine.
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Old 11-27-2018, 08:23 PM
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Goldenpony
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I use Pennzoil 5W20 Ultra Platinum full synthetic in my '06 GT. She's got over 165K miles on her and she runs like new. It's good enough for Roger Penske's race cars, so it's good enough for my 'Stang.
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Old 11-29-2018, 09:35 PM
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Riverrat73
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That's what I figured, when I get her she was not really making any noise. Now its a diff matter and I was suspicious that when I went to semi blend it started to knock just a little. I will be going to a full blend and see how that works out. Thanks for all the info, very helpful.
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Old 11-30-2018, 01:29 PM
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Derf00
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Originally Posted by Riverrat73 View Post
That's what I figured, when I get her she was not really making any noise. Now its a diff matter and I was suspicious that when I went to semi blend it started to knock just a little. I will be going to a full blend and see how that works out. Thanks for all the info, very helpful.
Just to be clear it's either a synthetic blend (dino + synthetic) or full synthetic (100% synthetic). No such thing as a full blend.
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Old 12-03-2018, 06:49 AM
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David Young
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Several years ago I searched synthetic blend vs full synthetic motor oil. 'Synthetic blend' motor oil can have as little as a half an ounce of synthetic mixed in the bottle of regular motor oil, and still be sold as 'synthetic blend'. I thought it would be 50% regular oil mixed with 50% synthetic, I was wrong
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Old 12-03-2018, 08:59 AM
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Norm Peterson
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Obviously Ford is going to pitch their Motorcraft oil, but it's actually pretty good stuff.

I used the 5W20 Motorcraft blend for about the first 12,000 miles (bought my '08 new), then switched to Motorcraft in 5W30 full-synthetic. A little extra protection at high rpms (particularly on the occasional track day) far outweighs any desire for gaining a small fraction of a mpg in street driving. Somebody who was once very close to the modular engine program made it clear that he wouldn't ever run 5W20 in them.


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