91 Festiva 5 Speed Manual-transmission fluid

[trumpeteerx]

>The Haynes manual says to use MERCON automatic transmission fluid for the 5 speed manual. Is this mercon V or mercon LV? Thank you!

[MasterTec]

Either would probably be just fine but MERCON V is the "official" fluid that is backwards compatible with the original MERCON.

[Snail]

Mercon III is cheaper than merc V and is what was used at the factory.

[tooldude]

Synthetic shifts really nicely and you can feel a difference.

[mikeyjd]

I use 0w20 synthetic motor oil with great results.

[navdoc101]

Royal Purple MaxATF!! Expensive but worth it.

[jason_]

480,000 miles on merc 3

2 discs, same flywheel and PP, 3 engines (1st burned valve, valve job, burned again, now a rebuilt different head/block

Same gearbox.

Fluids changed every 20,000 on manuals, every 7000 on autos because of pump and filter. I'm always needing hydraulic fluid, so seems as though I change oil and gearbox fluids more frequently on my 14 vehicles.....

Tried and tested. Higher priced stuff, is, well, higher priced.

Sent from my rooted HTC Supersonic using Tapatalk 2 Pro

[sketchman]

I'm with the motor oil crowd. If you can find Mobil 1 Euro Spec, it has higher levels of additives to help with wear.

I've also heard many people who say 100k is fine for fluid in a manual trans, and others who have never changed the fluid in 100s of thousands of miles with no ill effects.

[Zanzer]

I've ran both synthetic ATF and 30W motor oil in my cars with good results. On my next fluid change I'm swapping in Syncromesh. I've used it in Mustang T45's with great results, plus it has yellow metal compatibility. Pennzoil won't directly say that it's GL-4, but it's implied in all their product literature.