Within this tech guide you can find your factory Mustang specification for your differential fluid for all models!
Year Model | 8.8" Rear End *Includes IRS | 7.5" Rear End |
|---|---|---|
| 1979 Mustang | N/A | SAE 75W90 |
| 1980 Mustang | N/A | SAE 75W90 |
| 1981 Mustang | N/A | SAE 75W90 |
| 1982 Mustang | N/A | SAE 75W90 |
| 1983 Mustang | N/A | SAE 75W90 |
| 1984 Mustang | N/A | SAE 75W90 |
| 1985 Mustang | N/A | SAE 75W90 |
| 1986 Mustang | SAE 75W90 | SAE 75W90 |
| 1987 Mustang | SAE 75W90 | SAE 75W90 |
| 1988 Mustang | SAE 75W90 | SAE 75W90 |
| 1989 Mustang | SAE 75W90 | SAE 75W90 |
| 1990 Mustang | SAE 75W90 | SAE 75W90 |
| 1991 Mustang | SAE 75W90 | SAE 75W90 |
| 1992 Mustang | SAE 75W90 | SAE 75W90 |
| 1993 Mustang | SAE 75W90 | SAE 75W90 |
| 1994 Mustang | SAE 75W90 | SAE 75W90 |
| 1995 Mustang | SAE 75W90 | SAE 75W90 |
| 1996 Mustang | SAE 80W90 | SAE 80W-90 |
| 1997 Mustang | SAE 80W90 | SAE 80W-90 |
| 1998 Mustang | SAE 80W90 | SAE 80W-90 |
| 1999 Mustang | SAE 75W-140 | SAE 80W-90 |
| 2000 Mustang | SAE 75W-140 | SAE 80W-90 |
| 2001 Mustang | SAE 75W-140 | SAE 80W-90 |
| 2002 Mustang | SAE 75W-140 | SAE 80W-90 |
| 2003 Mustang | SAE 75W-140 | SAE 80W-90 |
| 2004 Mustang | SAE 75W-140 | SAE 80W-90 |
| 2005 Mustang | SAE 75W-140 | SAE 75W-140 |
| 2006 Mustang | SAE 75W-140 | SAE 75W-140 |
| 2007 Mustang | SAE 75W-140 | SAE 75W-140 |
| 2008 Mustang | SAE 75W-140 | SAE 75W-140 |
| 2009 Mustang | SAE 75W-140 | SAE 75W-140 |
| 2010 Mustang | SAE 75W-140 | SAE 75W-140 |
| 2011 Mustang | SAE 75W-140 | N/A |
| 2012 Mustang | SAE 75W-140 | N/A |
| 2013 Mustang | SAE 75W-140 | N/A |
| 2014 Mustang | SAE 75W-140 | N/A |
| 2015 Mustang | SAE 75W-85 | N/A |
| 2016 Mustang | SAE 75W-85 | N/A |
| 2017 Mustang | SAE 75W-85 | N/A |
| 2018 Mustang | SAE 75W-85 | N/A |
| 2019 Mustang | SAE 75W-85 | N/A |
| 2020 Mustang | SAE 75W-85 | N/A |
| 2021 Mustang | SAE 75W-85 | N/A |
| 2022 Mustang | SAE 75W-85 | N/A |
| 2023 Mustang | SAE 75W-85 | N/A |
