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Thread: Fork oil

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  1. #1
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    Fork oil

    Hello all round, I would like to change my fork oil on my 1980 R100RT. After checking the specs I have looked for Aeroshell 4 but can only buy a case, so Plan B what else shall I use? all advice gratefully received, Heed
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  2. #2
    Administrator 20774's Avatar
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    Snowbum has plenty to read here:

    http://bmwmotorcycletech.info/viscosity.htm

    Me, I used BMW's 7.5w fork oil.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
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    Bel-Ray

    I have used Bel-Ray - used to be the fork oil standard.

    Can be had at virtually any mc dealer.

    Change often!

  4. #4
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    fork oil

    I have the same year, though different looking forks. A&S Motorsports recommended BMW Motorrand Grade 7.5.
    SnowBum is an amazing source of information. Unfortunately I don't always have the band width to follow his writings. Wish I did.

  5. #5
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    Spectro here
    "If I had my life to live over, I'd dare to make more mistakes next time...I'd relax,I'd limber up... I would take fewer things seriously...take more chances... take more trips...climb more mountains...swim more rivers...eat more ice cream." Jorge Luis Borges at age 85.

  6. #6
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    Brand is pretty much irrelevant (as it is with nearly all lubricants). 7.5W seems to be most popular for avg weight folks. 5w if you're slight, 10w if you're robust.
    Ride Safe, Ride Lots

  7. #7
    Administrator 20774's Avatar
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    Unfortunately, 5w by one brand won't feel like the same 5w by another brand. This is something that a person has to try out and see what works. Once you found what you like, stick with it.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  8. #8
    Registered User dmftoy1's Avatar
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    Fork oil

    On a slash six isn't it just a matter of taking off the cap and using the hex key/ socket trick? If I remember right when you loosen the lock nut you can push the hex doodad back up breaking the seal and the oil drains out.

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