Mercon vs Dexron
Thread Starter
Instructor
Joined: Feb 2007
Posts: 160
Likes: 0
From: Wichita KS
Mercon vs Dexron
I am planning to have my atf changed. Is Mercon compatible with Dexron III which my owners manual says to use. I have been to two places sofar, and they want to put Mercon in it, but I know Mercon is for Ford and Dexron is for GM. I just want a pan drop and filter change, no flush. Thanks for any info.
Drifting
Joined: Sep 2003
Posts: 1,363
Likes: 7
From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
consider buying at dealer, consider avoiding synthetic
hthebeard,
I've noticed that finding pure Dexron III is difficult, most seem to carry newer chemical compositions which are Dexron IV/Mercon (suposedly works with both).
Perhaps the places you talked to, were implying the combo products.
Reminder, sometimes a newer rating (e.g. III -> IV) is not better as its chemical composition might not be backward compatible (e.g. should not use synthetic in early C5 manual transmissions because of 'paper blocking rings, or DOT 4 brake fluid is some aspects is not compatible with/when DOT 3 is specified).
Alternatively, you might be able to buy the Dexron III from a dealer and have your local shop do the change with it...
I've noticed that finding pure Dexron III is difficult, most seem to carry newer chemical compositions which are Dexron IV/Mercon (suposedly works with both).
Perhaps the places you talked to, were implying the combo products.
Reminder, sometimes a newer rating (e.g. III -> IV) is not better as its chemical composition might not be backward compatible (e.g. should not use synthetic in early C5 manual transmissions because of 'paper blocking rings, or DOT 4 brake fluid is some aspects is not compatible with/when DOT 3 is specified).
Alternatively, you might be able to buy the Dexron III from a dealer and have your local shop do the change with it...
Thread Starter
Instructor
Joined: Feb 2007
Posts: 160
Likes: 0
From: Wichita KS
hthebeard,
I've noticed that finding pure Dexron III is difficult, most seem to carry newer chemical compositions which are Dexron IV/Mercon (suposedly works with both).
Perhaps the places you talked to, were implying the combo products.
Reminder, sometimes a newer rating (e.g. III -> IV) is not better as its chemical composition might not be backward compatible (e.g. should not use synthetic in early C5 manual transmissions because of 'paper blocking rings, or DOT 4 brake fluid is some aspects is not compatible with/when DOT 3 is specified).
Alternatively, you might be able to buy the Dexron III from a dealer and have your local shop do the change with it...
I've noticed that finding pure Dexron III is difficult, most seem to carry newer chemical compositions which are Dexron IV/Mercon (suposedly works with both).
Perhaps the places you talked to, were implying the combo products.
Reminder, sometimes a newer rating (e.g. III -> IV) is not better as its chemical composition might not be backward compatible (e.g. should not use synthetic in early C5 manual transmissions because of 'paper blocking rings, or DOT 4 brake fluid is some aspects is not compatible with/when DOT 3 is specified).
Alternatively, you might be able to buy the Dexron III from a dealer and have your local shop do the change with it...
