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more reliable 4.6is or 4.8is more reliable 4.6is or 4.8is
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Old 02-22-2018, 09:09 PM
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Join Date: Apr 2011
Location: NEW YORK
Posts: 793
electricalserv x5 is on a distinguished road
I have had both.The4.6is got me hooked and I now have the 4.8is......much moe reliable.....the engine is better design too[2 timing chains] if its a 06 4.8is then the valve stem are the up dated ones.........You really have to change the oil every 4k
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2006 4.8IS
65K MILES
PURCHASED 7/13
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