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Old 08-30-2007, 11:42 PM
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azfordf100man azfordf100man is offline
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Is 20W50 oil a good idea?

Let me start off by saying that i live in phoenix arizona where the summers regularly see 115*. And in the winter it is nice but not cold by a long shot.

So, is this oil good to use here? My mechanic that i go to uses it year round and he is a great mechanic. Regularly has customers with fleet lincolns over the 300K mark.

I guess that I just want to be sure before i start using it in my cars because i do the oil changes myself. Any thoughts?

Thanks,
Mike
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Old 08-31-2007, 12:25 AM
Melchiah Melchiah is offline
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what engine you got? i live in the valley also and i use delo-400 in all my vehicles never had a problem i use it year round
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Old 08-31-2007, 07:16 AM
Ed Ed is offline
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20w50, much too thick and will cause your engine to work needlessly harder through all temperature bands. Gas mileage drops as well, but if you don't mind going to the gas station more often, use 20w50 oil.

If your engine is worn, loose, and you are burning oil, then you can use 20w50 to help with compression and worn engine parts.

Using 20w50 in a hot climate, is based on old, dated thinking when oils broke down quicker in hot climates. Engines werenot designed to run as hot either.

Today's modern oils, can and will easily handle your Phoenix and Arizona heat. Run a 5w30, 10w30 oil, and your engine will run at peak performance, peak gas mileage, and engine parts will be protected. 20w50 NOT NEEDED, but again, if you have a beater engine, this is your oil of choice.
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Old 08-31-2007, 07:47 AM
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And, if you have one of Ford's modular engines, you don't want anything near that heavy. You want the cams to get oil immediately after the engine starts (one of several reasons 5w-20 is recommended by Ford.)
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Old 08-31-2007, 11:11 AM
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actually, it is for my girlfriends car more so. she has a corolla with 123K miles that burns oil.
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Old 08-31-2007, 12:44 PM
jimandmandy jimandmandy is offline
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Oil burning Toyotas respond well to thicker oil. I used straight 40 in a Supra That smoked badly on 10W-30. This was where cold starting temperatues were above 50F.

Jim
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Old 08-31-2007, 03:49 PM
aurgathor aurgathor is offline
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What's in the engine now? I'd first try 15w40 before moving onto 20w50.
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Old 08-31-2007, 06:22 PM
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Apparently it already has it in, she got it changed at the mechanic. It's running good like usual, now i guess we'll see if it burns this oil as quickly.
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Old 08-31-2007, 11:15 PM
bruce381 bruce381 is offline
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compared to lighter multi grades a 20/50 is much lower in volitility and the thicker hot vis will both reduce oil burning.
bruce
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Old 08-31-2007, 11:15 PM
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