Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
techtalk:ref:susp01 [2019/04/13 01:55] hippysmack [Viscosity Comparisons] |
techtalk:ref:susp01 [2024/01/20 19:40] hippysmack [HD Recommendations] |
||
|---|---|---|---|
| Line 8: | Line 8: | ||
| * HD doesn't divulge the highly classified weight of their fork oil. \\ Some say type E is equivalent to 10W, some say it's equivalent to 15W oil or more from other manufacturers. \\ Just keep in mind when changing fork oil, you don't want to mix different used oils together with new oil. \\ Drain and clean all previous oil before installing new oil especially if previous oil is not known. | * HD doesn't divulge the highly classified weight of their fork oil. \\ Some say type E is equivalent to 10W, some say it's equivalent to 15W oil or more from other manufacturers. \\ Just keep in mind when changing fork oil, you don't want to mix different used oils together with new oil. \\ Drain and clean all previous oil before installing new oil especially if previous oil is not known. | ||
| * HD has, however, confirmed that type B (0-10W) fork oil is lighter than Type E (5-20). ((Q&A question 1 http://www.harley-davidson.com/store/fork-oil)) \\ That being said, if you want to stay with HD oils, you can mix B and E for an "X" weight of your choice to tune your forks. \\ All HD fork oils are petroleum based, non-synthetic oils. | * HD has, however, confirmed that type B (0-10W) fork oil is lighter than Type E (5-20). ((Q&A question 1 http://www.harley-davidson.com/store/fork-oil)) \\ That being said, if you want to stay with HD oils, you can mix B and E for an "X" weight of your choice to tune your forks. \\ All HD fork oils are petroleum based, non-synthetic oils. | ||
| - | * Also, the kinematic viscosity (at 40°C [mm2/s = cSt]) was mentioned on the HD site for Type E. ((Q&A https://www.harley-davidson.com/store/fork-oil-pa-17-9988480--1)) ((link provided by shanneba of the XLFORUM http://xlforum.net/forums/showthread.php?t=2039687&page=10)) \\ Mid-point -46, minimum- 41.4, maximum- 50.6 \\ (ISO 3448 Viscosity class ISO VG 46, ISO VG 46 = SAE 15) | + | * Also, the kinematic viscosity (at 40°C [mm2/s = cSt]) was mentioned on the HD site for Type E. ((Q&A https://www.harley-davidson.com/store/fork-oil-pa-17-9988480--1)) ((link provided by shanneba of the XLFORUM https://www.xlforum.net/forum/forum-functions/sportsterpedia-com-admin/191119-send-a-note-to-sportsterpedia-admin/page10?t=2039687&page=10)) \\ Mid-point -46, minimum- 41.4, maximum- 50.6 \\ (ISO 3448 Viscosity class ISO VG 46, ISO VG 46 = SAE 15) |
| + | * Additional information provided by Tomcatt of the XLForum (through conversation with tech guys at Red Line Oils) | ||
| + | * Harley Davidson type "B" = 34.3cSt@40°C | ||
| + | * Harley Davidson type "E" = 39.2cSt@40°C | ||
| + | |||
| ===== Aftermarket Fork Oil ===== | ===== Aftermarket Fork Oil ===== | ||
| Line 91: | Line 94: | ||
| The chart is a comparison of HD Type E, Red Line Medium, Red Line Heavy and the 75% RL Medium / 25% Red Line Heavy fork oils. \\ | The chart is a comparison of HD Type E, Red Line Medium, Red Line Heavy and the 75% RL Medium / 25% Red Line Heavy fork oils. \\ | ||
| Temperatures from 0C / 32F to ~ 50C / 122F (the data on the web page goes up to 80C). \\ | Temperatures from 0C / 32F to ~ 50C / 122F (the data on the web page goes up to 80C). \\ | ||
| - | You can see clearly how the higher (442) viscosity Index of the Red Line Medium fork oil changes viscosity less at colder temp. | + | You can see clearly how the higher (442) viscosity Index of the Red Line Medium fork oil changes viscosity less at colder temp. \\ |
| This should give a more consistent suspension at lower temps. Again, trust your own results / testing. \\ | This should give a more consistent suspension at lower temps. Again, trust your own results / testing. \\ | ||
