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Unread 02-16-2002, 02:31 PM   #1
Addicted Jeeps Anonymous
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Synthetic oil question

Want to switch to synthetic oil in my I6/258. Do I need to flush the system somehow, or can I just drain the old oil, change the filter and add synthetic?

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'83 CJ7 258/T-5 Got some crap on it.
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Unread 02-16-2002, 06:22 PM   #2
evilpsych
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you *can* just make the switch if you want to. However if you're really worried about deposits and sludge left over from the old oil, i would run an engine flush. You can either buy the can of stuff or go get the heavy duty treatment that many dealers offer that really dissolves anything in the engine. course, that's expensive. then just add your flavor of synthetic, my personal fav is mobil 1. I know that with another synthetic oil (AMSoil) you have to run a motor solvent through it to get the best results.
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Unread 02-16-2002, 07:59 PM   #3
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Will probably get the engine flush. Want to give my engine every advantage I can. Thanks for the help!
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'83 CJ7 258/T-5 Got some crap on it.
'99 F-250 PowerStroke ($3.30 a gallon??? Are you kidding me??) Anybody have a 4cyl for sale?
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