WH_cyber_nerd 16 #1 Posted February 25, 2023 Hello, Recently purchased a 1986 414-8. I want to take care of the thing and top off whatever oils it needs. Curious what people are buying for transmission oil? The manual I found says 2 qts of SAE 90W GL-5, on amazon I found one item matching that exactly and its a bit pricey. Thanks in advance! 1 Share this post Link to post Share on other sites
953 nut 55,280 #2 Posted February 25, 2023 Your transmission does use SAE 80-90 or any gear oil that is in that range. Any local auto parts store or Walmart or Tractor Supply will have gear oil. 2 Share this post Link to post Share on other sites
WH_cyber_nerd 16 #3 Posted February 25, 2023 10 minutes ago, 953 nut said: Your transmission does use SAE 80-90 or any gear oil that is in that range. Any local auto parts store or Walmart or Tractor Supply will have gear oil. Alright thanks, I'll pick some up! Wasn't sure if the GL-5 part was significant. 1 Share this post Link to post Share on other sites
Skwerl58 704 #4 Posted February 26, 2023 Like stated the 80-90 is what it takes. Be sure you use the drain plug which is on the bottom and also lift the front end so the old lube can completely drain out. 3 Share this post Link to post Share on other sites
peter lena 8,632 #5 Posted February 26, 2023 @g00chl0rd found using a high mileage ATF TRANS FLUID , like Walmart brand , 2 qts is very good at trans cleaning , only use this for driving around , no attachment use with it. does a good clean / flush drain . another thing , lucas heavy duty , 80-90 gear oil has climbing gear additives , to make the oil sling much more effective in use , also stop and use every gear , / range for a distance , to insure lubrication to it . also lubricate the entire clutch linkage , lever set up , no rusty / binding anything . drive my horses up the road for thorough lubrication sling / flush cleaning , using reverse , get that oil change every where . @Skwerl58 is right at a front end lift to enhance draining . also replace shift boot , just an opportunity , while you are there , pete 1 Share this post Link to post Share on other sites
peter lena 8,632 #6 Posted February 27, 2023 @23 Reo done that on my 3 horses , and recently on another , the ease of operation / noise . general condition is amazingly different . very often refer to a ( transition ) time . when I try anything . always follow it thru for reaction , functional difference . with oils , its time and distance , think about what its doing , ues ever gear / range drive in reverse , lubricate related areas , make rust run out , making a change ? always bring a road kit with me on a drive , small tools , lubricants , carb cleaner . done this drill many times , always come back with a gain .new shift boot , with shifter lever hose clamp to stop shift boot creep .should see / feel / sense a gain of functional ease , make your road time oil heat up count . this is regular stuff for me . let me know how you are doing , pete 2 Share this post Link to post Share on other sites
peter lena 8,632 #7 Posted February 27, 2023 @23 Reo , @Brockport Bill , have about 4 hrs run time on my recent horse pick up , 312-8 . had a lot of issues , did trans last week , complete chassis detailing , road time with 2 qts atf fluid in trans , much better clean out / flushing , probably a couple of hrs on it , lots of gear changing , hi / lo range , lots of reverse time , dropped atf , was pink , and very thorough . lucas heavy duty , gear oil 80-90 , with climbing oil additives , picture that in the gear box , looks slightly stringy , so its enhancing lubrication . the clutch linkage was rusty dry , now lucas red/ green grease , chain lube in tough areas , rust run out , also went after the drive belt idler pulley area , might even re grease it ,everything that was stuck / frozen , is now free and easy moving . also have added zink in the engine , the engine clean out was filthy , rotella ,and added zink , love it , running it more and more , make it better , pete 1 Share this post Link to post Share on other sites
