cabby Posted September 27, 2011 Report Share Posted September 27, 2011 Quick question to the knowledgeable Can I substitute dexron 111 aft for fork oil and if so what is this aft equivalent to in weight ?/ Cheers peeps Quote Link to comment Share on other sites More sharing options...
b40rt Posted September 27, 2011 Report Share Posted September 27, 2011 Quick question to the knowledgeable Can I substitute dexron 111 aft for fork oil and if so what is this aft equivalent to in weight ?/ Cheers peeps TQF is supposed to be about 7. Quote Link to comment Share on other sites More sharing options...
cabby Posted September 27, 2011 Author Report Share Posted September 27, 2011 TQF ?? Quote Link to comment Share on other sites More sharing options...
ormplus Posted September 27, 2011 Report Share Posted September 27, 2011 aqf automatic transmision fluid.why not put 5wt fork oil in the forks when thats whats supposed to go in them. Quote Link to comment Share on other sites More sharing options...
fatbastard Posted September 27, 2011 Report Share Posted September 27, 2011 aqf automatic transmision fluid.why not put 5wt fork oil in the forks when thats whats supposed to go in them. Because he is as tight as a virgins fanny. Quote Link to comment Share on other sites More sharing options...
cabby Posted September 27, 2011 Author Report Share Posted September 27, 2011 I have some curdled milk here, just gonna put that in Quote Link to comment Share on other sites More sharing options...
ormplus Posted September 27, 2011 Report Share Posted September 27, 2011 probably work better than atf. Quote Link to comment Share on other sites More sharing options...
stork955 Posted September 27, 2011 Report Share Posted September 27, 2011 ATF is OK in forks. It is designed as a hydraulic fluid, amongst other things. If 5 weight is specified, it will firm damping up a little bit, although I dont reckon I could tell the difference. Your results may vary... Cheers, Stork Quote Link to comment Share on other sites More sharing options...
copemech Posted September 28, 2011 Report Share Posted September 28, 2011 (edited) I suspect ATF comes in closer to 10W in viscosity. Might make things a bit harsh in the newer forks, although some the old stuff seemed a bit more tuned for it! Primary reason it works in forks its the "anti foaming" agents in the mix. Doubt the "stictsion" properties the same. Edited September 28, 2011 by copemech Quote Link to comment Share on other sites More sharing options...
trialdude Posted October 8, 2011 Report Share Posted October 8, 2011 Are you sure that ATF in forks wont foam? Fork fluid is designed to not foam while in travel within the fork, and thats why regular motoroil in damping systems is not OK? Quote Link to comment Share on other sites More sharing options...
copemech Posted October 9, 2011 Report Share Posted October 9, 2011 Are you sure that ATF in forks wont foam? Fork fluid is designed to not foam while in travel within the fork, and thats why regular motoroil in damping systems is not OK? I am not saying that it absolutly will not foam in this application, however it Does have decent anti-foaming additives, and has been used many times, particularly in older bikes of several varieties, however, the newer bikes are tuned for 4-5w, and I may not reccomend it as it may be a bit harsh on the compression stroke. Quote Link to comment Share on other sites More sharing options...
cascao Posted March 5, 2018 Report Share Posted March 5, 2018 Honda specify ATF oil for forks on some bikes like XR's. Quote Link to comment Share on other sites More sharing options...
pmk Posted March 6, 2018 Report Share Posted March 6, 2018 ATF can be a fine choice to use in both a fork and rear shocks, however, other times it is less than good. FWIW, in my KTM,I run Mobil 1 ATF, with great results. This is in the fork only. On the 73 OSSA MAR, as I did the rebuild, I used Mobil 1 ATF in both the forks and the Curnutt rear shocks. After a few rides, it was apparent that both ends of the MAR were overdamped. Ridable but not lively. In the forks I switched to Maxima 5 wt fork oil. They work well with that setup. The rear shocks, originally specified running Ford ATF. Consider these were state of the art in the early 70s. Keeping this short, I swapped the rear shock fluid in the Curnutts to the same Maxima 5wt. Noticeably improved, but still no spring in its step. Ultimately, I had to make changes to the pistons bleed holes to get it sorted out. All that said, use caution when going to a different fluid, it may make a drastic change, or may be fine. This link is for Peter Verdones suspension fluid info he published a long while back. Good info to keep things consistent when changing brands or viscosity of fluids. http://www.peterverdone.com/suspension-fluids/ Quote Link to comment Share on other sites More sharing options...
lineaway Posted March 7, 2018 Report Share Posted March 7, 2018 Make sure you use it in the tranny too. Quote Link to comment Share on other sites More sharing options...
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