LS1TECH - Camaro and Firebird Forum Discussion - What fluid for my new ford 9"?

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THE LAST Z

11-21-2009 05:22 PM

What fluid for my new ford 9"?

Im installing my new 9" with a detroit locker soon. What fluid should I use during the break-in and after the break-in? Also, is it a good idea to use synthetic with my rear?

35th SS

11-21-2009 07:44 PM

do not use synthetic oil.80 90 reg.gear oil is all you need.

EPP	11-22-2009 07:29 AM

Quote:

Originally Posted by 35th SS (Post 12528830)

do not use synthetic oil.80 90 reg.gear oil is all you need.

Correct! Bob

Schantin

11-23-2009 08:58 AM

Quote:

Originally Posted by 35th SS (Post 12528830)

do not use synthetic oil.80 90 reg.gear oil is all you need.

What rex said. I run Lucas oil in mine.

THE LAST Z

11-24-2009 04:20 PM

OK thanks. Any reason to go with a thicker oil?

35th SS

11-24-2009 07:24 PM

prolly wouldnt matter as long as reg. stinky gear oil.Ive used valvoline 85w-140 on my past rear fluid change.

noticed on your location.I feel for you mang.its been almost 3 yrs since our track was close.no worries we might have something in the works in the next year or to.

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