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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Which oils to use in 853, Need some direction
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<blockquote data-quote="reaperman" data-source="post: 103943" data-attributes="member: 6675"><p>Good idea to change fluids and filters. Oil first, you can use the 15w-40 for the engine. You could also run 10w-30 engine oil instead of 15-40 for winter use. The bobcat engine oil filter number is 6665603, which can easily be crossed to another brand. Hydraulic oil is an on-going debate. From the factory your machine model most likely came with 10w-30 engine oil in the hydraulics along with all bobcat models from that era. Using 10w-30 engine oil in the hydraulics is about as expensive as bobcat brand hydraulic oil compared to the AW-46. I've read that "tractor fluid" a good substitute for hydraulic fluid also. Its used for hydro static drive machines which use the same fluid for hydraulics plus drive motors. I havent used it. As far as mixing the hydro fluids. Since its almost impossible to drain the hydro system on a machine, fluids do get mixed when adding new fluid to existing fluids of different weights. Since your machine came with 10w-30 and now your adding bobcat brand, you may not want to add a third fluid to the system. Instead add more bobcat fluid or 10w-30 to fill. And as your chain case goes, use that cheaper AW-46, the chain case holds about 8 gallons total. Fluid weight isnt that important overall. Just think of a bathtub for the chains and sprockets to get lubrication, just about anything will work in there. Keeping the fluid from collecting water is more important. So seal the chain case cover up good when your finished. Bobcat makes a special "caulk" just for this. It comes in a regular caulk tube. Be sure to seal the bolts too.</p></blockquote><p></p>
[QUOTE="reaperman, post: 103943, member: 6675"] Good idea to change fluids and filters. Oil first, you can use the 15w-40 for the engine. You could also run 10w-30 engine oil instead of 15-40 for winter use. The bobcat engine oil filter number is 6665603, which can easily be crossed to another brand. Hydraulic oil is an on-going debate. From the factory your machine model most likely came with 10w-30 engine oil in the hydraulics along with all bobcat models from that era. Using 10w-30 engine oil in the hydraulics is about as expensive as bobcat brand hydraulic oil compared to the AW-46. I've read that "tractor fluid" a good substitute for hydraulic fluid also. Its used for hydro static drive machines which use the same fluid for hydraulics plus drive motors. I havent used it. As far as mixing the hydro fluids. Since its almost impossible to drain the hydro system on a machine, fluids do get mixed when adding new fluid to existing fluids of different weights. Since your machine came with 10w-30 and now your adding bobcat brand, you may not want to add a third fluid to the system. Instead add more bobcat fluid or 10w-30 to fill. And as your chain case goes, use that cheaper AW-46, the chain case holds about 8 gallons total. Fluid weight isnt that important overall. Just think of a bathtub for the chains and sprockets to get lubrication, just about anything will work in there. Keeping the fluid from collecting water is more important. So seal the chain case cover up good when your finished. Bobcat makes a special "caulk" just for this. It comes in a regular caulk tube. Be sure to seal the bolts too. [/QUOTE]
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Which oils to use in 853, Need some direction
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