hydrolic gearbox oil alternatives ?

[plugga]

hi, I just changed the gearbox seals on<br />my 1969 85hp hydrolic gearbox.<br />the local marine shop was out of stock of the<br />correct evinrude oil but they assured me it's ok to run auto transmission fluid in this gearbox.<br /><br />I would normally wait and get the propper stuff, <br />but its 9pm now and i was hoping to go fishing in 8 hrs <br /><br />i'm no expert and i dont have much faith in the shop assistant. Does anyone know about this?<br />Thanks

 

[rodbolt]

Re: hydrolic gearbox oil alternatives ?

69 85 should be hydro-electric. dont use atf. use the correct type C. gears and pumps are getting harder to find for those old motors.<br /> good luck and keep posting

 

[ledgefinder]

Re: hydrolic gearbox oil alternatives ?

"Dextron" ATF is recommended in the factory manual.

 

[kd6nem]

Re: hydrolic gearbox oil alternatives ?

ledgefinder,<br />Would you mind quoting the specific mention of that, or better yet link to a scanned copy or something? The lubes ARE similar, though the Type C (aka Premium Blend) may be a lot better at dealing with the inevitable water intrusion or something. At least I had hoped so given the price of the stuff. I've always heard this as anecdotal- never have I heard until now that there may be an official OMC approval for using ATF?<br /><br />Dexron is hard to find these days. Is it reformulated & given the name Dexron/Mercon now that Ford has abandoned their type F in favor of the Dexron (except for power steering which may still use type F in many cases). Anyone know for sure what changes really happened with the formulation?

 

[plugga]

Re: hydrolic gearbox oil alternatives ?

I went to another marine dealer who had the correct evinrude lube. I Spoke to the mechanic there who said he had seen quite a few old evenrudes running ATF but he would not recomend using it. apparantly it eats out the solonoid and brass componants of the gearbox (long term use ).<br />I dont think i would have any problems using it as a stop gap or for testing rebuilds for leaks. <br />$5.00 of ATF waisted or $30 of evenrude lube - <br />I also asked if i could look at his factory work shop manual to check out what oil is recomended.<br />No go, the motor is too old for them to service or hold any info on.