07-22-2006, 04:35 AM
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Junior Member
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Join Date: Sep 2005
Posts: 159
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93 deville
On Sat, 22 Jul 2006 03:11:09 GMT, harold69 <caddy20@prodigy.net>
wrote:
Quote:
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i have a 93 caddy deville would it be ok to run 87 octane in it or do i haveto put 93 or 89
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My '93 Eldo which has the same 4.9 engine won't run well on regular.
You could retard the timing a couple of degrees but you would likely
then lose in mileage what you gained at the pump. Some have reported
no real difference in performance. You could try some 89 and if you
get any pinging you can go back to 93.
FWIW
YMMV
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