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Joined: Mar 2007
Posts: 62
Trainee
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I have a Bolens ST140 hydro with an Eaton Hydrostatic transmission model 7. Does anyone know what fluid can be used ? Can I use automatic transmission fluid or hydraulic fluid ? I have been told I can use engine oil as long as it is about SAE 20 rating. Does this sound right ? I would like to find a fluid that is not a special, ie, I dont have to order and wait for for weeks.
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Joined: Dec 1999
Posts: 5,430 Likes: 36
Repair Junkie
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Cliff, Use Mobile One Synthetic oil. 
Regards, ![[Linked Image]](https://www.outdoorking-forum.com.au/forum/images/members/mower-monsterw.jpg) Bruce Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
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Joined: Mar 2007
Posts: 62
Trainee
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Bruce Im not the best with oil types, does the Mobile oil have an SAE rating, or a type that I can trace. ?
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Joined: Dec 1999
Posts: 5,430 Likes: 36
Repair Junkie
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Cliff, Click this link: Mobile 1 website 
Regards, ![[Linked Image]](https://www.outdoorking-forum.com.au/forum/images/members/mower-monsterw.jpg) Bruce Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
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Joined: Mar 2007
Posts: 62
Trainee
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Thanks Bruce it looks good
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