tommybro 1 #1 Posted January 25, 2010 Hi, I have a 1960 511 we are in the process of restoring. We want to chage the oil in the transmission and want to make sure we don't put too much / little in.Can anyone please tell me how much. Also I have read 30 weight oil to gear oil on this site, what do you recommend. This will probably not see to muchcold weather work. Thanks in advance for your response Share this post Link to post Share on other sites
linen beige 14 #2 Posted January 25, 2010 Capacity is one and one half quarts. You will likely get other answers, but Wheel Horse recommends using SAE 90-140 A.P.I. Service GL-5 gear lube. Lighter weight gear lubes will work, as long as they are GL-5 rated. Engine oil is NOT a good idea as it will squeeze out from between the gear teeth and allow metal to metal contact. It will also offer next to no protection to the bronze axle bearings. Share this post Link to post Share on other sites
TT-(Moderator) 1,131 #3 Posted January 25, 2010 Confusing. A 511 doesn't exist and a 551 is a 1961 - not a 1960. If it's a 551, it has the two piece Uni-Drive. A 550 would have the three piece Uni-Drive. So what do you actually have? :banghead: Share this post Link to post Share on other sites
tommybro 1 #4 Posted January 25, 2010 Crap, I should have proof read that, sorry I was told it's a 1960 551 Share this post Link to post Share on other sites
TT-(Moderator) 1,131 #5 Posted January 25, 2010 I was told it's a 1960 551 It has to be one or the other - but not both. 1960 = 550 1961 = 551 Have any pictures? :thumbs: Share this post Link to post Share on other sites
tommybro 1 #6 Posted January 25, 2010 Hi, I will post some pictures tonight, she is torn down right now and primered but I am sure you will be able to tell me what I have. Kinda like telling me where to go and how to get there. :thumbs: Share this post Link to post Share on other sites
TT-(Moderator) 1,131 #7 Posted January 25, 2010 You can also check out the Picture Gallery and compare. Share this post Link to post Share on other sites
pfrederi 17,644 #8 Posted January 26, 2010 Engine oil is NOT a good idea as it will squeeze out from between the gear teeth and allow metal to metal contact. It will also offer next to no protection to the bronze axle bearings. But the hydros have gears in the rear end and they use 10w30 or 10w 40 motor oil.... Share this post Link to post Share on other sites
linen beige 14 #9 Posted January 26, 2010 1960 = 550 1961 = 551 Good catch TT! Again I gotta admit that I DID see this, but forgot about it within the time it took to look up the capacity. Either way, both the 550 and 551 use the same lube in the same amount. Share this post Link to post Share on other sites
tommybro 1 #10 Posted January 26, 2010 Hi, I got some pictures, hopefully I did this right. Share this post Link to post Share on other sites
hotrodmerc 1 #11 Posted January 26, 2010 That is the standard 4 speed unidrive. I had the same in my 552. Share this post Link to post Share on other sites
TT-(Moderator) 1,131 #12 Posted January 26, 2010 Which makes the tractor a 1961 551 Suburban. Share this post Link to post Share on other sites
