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#1
11-27-2004, 09:39 PM
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oil opinion?
During my last oil change i switched to synthetic 10w/30. i haven't really seen any improvments in the performance and the oil pressure at an idle is a little lower than what it was with regular oil. The car has 113,000 miles and doesn't smoke or burn oil. For those who run synthetic in there car what weight would be best? thanks for the opinions...
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87 5.0 5 spd T-Tops - mass air conversion 9AL, msd distributer, coil, fms 9mm wires, bbk ceramic coated long tubes, bbk h pipe, 3" flowmaster catback, 190 lph fuel pump, 24 psi injectors, 70mm cobra meter, bbk AFPR, bbk fender kit with k&n filter, 12* base timing, flex fan, 3 row aluminum radiator, 6 piece headlight kit w/ clear corners, silver ponys, stormin normin cowl hood, saleen wing, and recently a new heater core 
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#2
11-27-2004, 09:59 PM
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Re: oil opinion?
10w30 is great. I use Mobil 1 Synthetic. I'd only use 5w30 in really cold weather (like 20 farenheit or lower)
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95 GT AKA "The Purple Hippo". Stock 302 bottom end. Edelbrock Heads. Performer 5.0 Intake, 1.7 RR's on stock Cam, Stock T5, 3.27 gears, UD Pullies, K&N Filter, rubber boot deleted, A/C deleted, BBK Catted X-Pipe, 180º TStat, EEC Tuner running J4J1 stock BIN. AEM WB02, Minor tunes, running pig rich. No clue as to RWHP feels a tad faster than a stock 05 GT.
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#3
11-27-2004, 10:00 PM
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Re: oil opinion?
btw you shouldn't really see a difference in performance to be honest, but the synthetic will not break down at high temps, so you can rev really high and you'll have more protection from the oil. For daily driving you probably won't feel a difference.
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95 GT AKA "The Purple Hippo". Stock 302 bottom end. Edelbrock Heads. Performer 5.0 Intake, 1.7 RR's on stock Cam, Stock T5, 3.27 gears, UD Pullies, K&N Filter, rubber boot deleted, A/C deleted, BBK Catted X-Pipe, 180º TStat, EEC Tuner running J4J1 stock BIN. AEM WB02, Minor tunes, running pig rich. No clue as to RWHP feels a tad faster than a stock 05 GT.
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#4
11-27-2004, 10:00 PM
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Re: oil opinion?
10w30 is fine. you won't really 'notice' a big power increase, it's pretty small. a little bit lower oil pressure at idle is fine, all you really need is about 20 psi at idle and then 10 psi for each 1000 rpm the motor spins. also depends on the motor. your motor's durability will benefit from the synthetic. and now that you've used synthetic, you can't go back to regular unless you wanna trash all your seals.
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-Andy '89 Mustang 5.0 - How fast? i'll know this weekend. '86 Mustang LX - Shortblock is built, now for the rest of it. "Put the subject before the verb, hmm? Fail this class, you will." -Yoda teaches english class.
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#5
11-28-2004, 11:15 AM
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Re: oil opinion?
I still prefer conventional oils myself. I usually run 10W40 Valvoline, and have not had a single problem since rebuild, 25-30k miles.
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[size=1]-1950 Ford Custom, flathead V8
-2013 Ford Flex -1999 Ford F150
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#6
11-28-2004, 12:58 PM
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Re: oil opinion?
thanks for the input guys. at least i know that i'm not doing any harm to the motor.
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87 5.0 5 spd T-Tops - mass air conversion 9AL, msd distributer, coil, fms 9mm wires, bbk ceramic coated long tubes, bbk h pipe, 3" flowmaster catback, 190 lph fuel pump, 24 psi injectors, 70mm cobra meter, bbk AFPR, bbk fender kit with k&n filter, 12* base timing, flex fan, 3 row aluminum radiator, 6 piece headlight kit w/ clear corners, silver ponys, stormin normin cowl hood, saleen wing, and recently a new heater core
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