M50d r1 oil

[97ranger2.3]

So what oil does everyone prefer to use in their 5 speed trans? Is cheap ATF good enough? Is the more expensive stuff necessary or is it all hype? How about pennsoil? Syncro?
any thoughts?

 

[RonD]

It only holds 2.8 quarts bone dry, usually only takes just 2quarts after draining

So not a big expense in fluid
Mercon V or equivalent is spec'ed by Ford, now called Motorcraft XT5QMC

Many like synthetic version, I still used Mercon V

 

[97ranger2.3]

It only holds 2.8 quarts bone dry, usually only takes just 2quarts after draining

So not a big expense in fluid
Mercon V or equivalent is spec'ed by Ford, now called Motorcraft XT5QMC

Many like synthetic version, I still used Mercon V

It only holds 2.8 quarts bone dry, usually only takes just 2quarts after draining

So not a big expense in fluid
Mercon V or equivalent is spec'ed by Ford, now called Motorcraft XT5QMC

Many like synthetic version, I still used Mercon V

ok thanks

 

[4x4junkie]

I've seen some issues with Mercon V causing hard shifting in a manual trans... I recommend (specifically): "Dex/Merc" fluid. It matches the original Mercon specification for the M5OD transmission (all before 2008).

If you want a synthetic, Royal Purple Synchromax should be a good bet that is made specifically for manual transmissions that normally take ATF (I have that in my '90 trans, though I can't comment reliably about shift quality since my '90 trans was previously a victim of Mercon V).

 

[racsan]

I have ran the pennzoil syncromesh fluid myself for several years with no problems, The recommended fluid for this transmission is atf.