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Just saw a commercial for Mobil 1's supersyn synthetic oil. It shows a car speeding around a race track. They repeated a couple times to choose Mobil 1 and "pour in the performance". But what performance are they talking about exactly? Last I heard, putting in a synthetic oil will do practically nothing in terms of HP gains and the car drives pretty much the same. Is this just BS marketing?

 
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mobil 1 just makes really good oil and synthetic will let the car run better longer.

 
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There are a few advantages to using synthetic. Longer oil change intervals, and in general, they are better at high temp/high shear properties, etc. In your civic, if you're not racing it, then the only reason to really use synthetic is simply for the extra protection if you live where temps get really high or really low, and for longer oil change intervals. (you can easily go 10k before changing your oil)

 
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"Performance" can mean many things.

 
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would 4000 be ok for a turbo civic. I have always changed it at 3000 even stock (with synthetic-mobil1), but there are times I dont have time to change it or get to a shop. WOuld this be ok, not all the time definately, Id rather change it at 2500.

 
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Only way to REALLY tell, is to get the oil analized by a lab (Blackstone and others).

Do you have a stock pan? Any oil coolers? Do you know how hot your oil gets?

I run 5k on my oil in my twin turbo Audi. But, my car has 7qts of oil capacity. With a stock oil pan of 3.75 quarts, 5k miles may be too much. Heck, 3k may be too much if you really abuse it.

Check out oil labratories online.

 
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haha, reefer^^. cool name.

I dont know how hot it gets, I need to invest in a few more things for my car. But right now Im too busy getting a clutch, clutch master/slave cylinder, and tranny mount. My car got pretty busted the other day.

I use 4.5 qts of oil, btw. stock pan (modified), and no coolers (yet)

 
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Thanks on the name...

Good deal on having more oil... I'm always leary of running a turbo on an engine that was not originally designed for a turbo. Cooling is always such a big issue. Keeping that oil at a reasonable temp (especially in AZ) I would think would be an issue as well. I would reccomend an oil temp gauge. That and buying a kit from Blackstone to get the oil tested if you're that concerned about it.

 
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At least I dont have to drive my car in the heat for a couple weeks. It gets soooo damn hot here, its gonna be 100 degrees tomorrow and 110 within a few days. Time for some new record temps, damnit.

Ill check into an oil temp gauge in the next couple weeks. thanks

 
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I use synthetic oil ever since i got nitrous. Haven't really noticed a difference although from friends suggestions it's recommended.

 
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What will synthetic oil do for me?