I have a 2006 F-150 4X4, and recently did a search to find out what should be used in the transfer case. I don't have an owner's manual. Found a website that showed either Mercon LV or XL-12. I went with Mercon LV about 200 miles ago.Now I am reading that Mercon LV should only be used in TCs mated to a Mercon LV trans. Mine calls for Mercon V. I thought about draining the TC and filling with XL-12, but I have read that XL-12 has been discontinued. I am at a loss as to what to do..If XL-12 is discontinued, it sounds like I'm stuck with Mercon LV. Any thoughts on how I should proceed? Thanks in advance.
Mercon LV or XL-12 in the transfer case?
- Thread starter Vigilant
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MolaKule
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I would stick with the LV fluids and while they have a slightly lower viscosity, they are more stable.
Mine has redline D4 in it. So did my 2009. I think LV is fine for any of them. If you have the one with 4A switch (lariat and up), don't put mercon V in it. While somewhat unsubstantiated, it seems to damage the auto clutches over time and cause failure. Any transfer case without the 4A setting is fine with almost any ATF.
https://www.youtube.com/watch?v=F7gKtqkuhmU
https://www.youtube.com/watch?v=F7gKtqkuhmU
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I used this with great results: https://www.valvoline.com/our-produ...oducts/multi-vehicle-transfer-case-fluid
XL-12 was discontinued and replaced by Mercon LV. We have used it in countless vehicles with no negative results.
Originally Posted by bdcardinal
XL-12 was discontinued and replaced by Mercon LV. We have used it in countless vehicles with no negative results.
When did this happen? Last year when I did my 100k service XL-12 was still recommended for the transfer case... although I went with the Amsoil ATF.
XL-12 was discontinued and replaced by Mercon LV. We have used it in countless vehicles with no negative results.
When did this happen? Last year when I did my 100k service XL-12 was still recommended for the transfer case... although I went with the Amsoil ATF.
Originally Posted by buck91
Originally Posted by bdcardinal
XL-12 was discontinued and replaced by Mercon LV. We have used it in countless vehicles with no negative results.
When did this happen? Last year when I did my 100k service XL-12 was still recommended for the transfer case... although I went with the Amsoil ATF.
Maybe within the last 6-9 months. We sold out of our XL-12 and had to keep correcting our system whenever I tried to sell Mercon LV it wanted to bill out XL-12.
Originally Posted by bdcardinal
XL-12 was discontinued and replaced by Mercon LV. We have used it in countless vehicles with no negative results.
When did this happen? Last year when I did my 100k service XL-12 was still recommended for the transfer case... although I went with the Amsoil ATF.
Maybe within the last 6-9 months. We sold out of our XL-12 and had to keep correcting our system whenever I tried to sell Mercon LV it wanted to bill out XL-12.
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