NB Floyd 37 Posted December 12, 2021 I bought some T5 Rotella 15w-30 synthetic blend because it was the only one in stock. I have been using T4 15w-30. Changed the oil and went for a trail ride. And then later saw that the oil did not have the JASO spec listed on the bottle. It seems to start , run and shift great. Any one use this oil with a wet clutch ? thanks. 2004 Foreman 450 ES Share this post Link to post Share on other sites
THH 297 Posted December 12, 2021 I would drain the oil right away and put the JASO spec oil back in. Share this post Link to post Share on other sites
bcsman 1,404 Posted December 12, 2021 Agree with THH, the only Rotella oil to be used with wet clutches is T4 and T6. I don't know how quickly any damage is done but wouldn't run it before swapping the oil out.... 1 Share this post Link to post Share on other sites
AKATV 839 Posted December 13, 2021 I agree, just drain and refill you'll be good 1 Share this post Link to post Share on other sites
jeepwm69 7,719 Posted December 13, 2021 Something to consider with oils is that the manufacturer has to pay for each of those certifications, so sometimes the classification might be met but the manufacturer might not have paid for the particular certification. I have seen quite a few "Is T5 safe for wet clutch" threads on the BITOG forum (oil nerds) and everything that I've seen there says T5 is fine for wet clutches. I run T6 because I like full synthetic and my machines shift easier and run cooler with T6, but I wouldn't be scared to run T5. You could call Shell and ask them. This guy claims he did and they said T5 is wet clutch approved. https://bobistheoilguy.com/forums/threads/is-rotella-t5-10w-30-ok-for-wet-clutch-bikes.215408/page-2#post-3344615 1 Share this post Link to post Share on other sites
jeepwm69 7,719 Posted December 13, 2021 Another longer thread on BITOG on T5 https://bobistheoilguy.com/forums/threads/rotella-t5-15w-40.240368/#post-3825133 2 Share this post Link to post Share on other sites
NB Floyd 37 Posted December 15, 2021 Put T4 back in the bike. I like my Foreman too much to experiment with a non Jaso oil. Using T6 next time might be worth the upgrade as the T5 did seem to make for easier cold starting. Thanks for everyone’s input. 2 Share this post Link to post Share on other sites
NB Floyd 37 Posted November 5, 2022 An update. For my Next oil change I went with T6 rotella synthetic. The bike starts much better when cold. And may even shift better. also the oil light flicker seems to have really died down. I did also drop the skid plate , cleaned the mud and trash out of it , then reinstalled. 1 Share this post Link to post Share on other sites
Goober 1,555 Posted November 5, 2022 Flickering sounds like loose pin on the FCU or a failing FCU Share this post Link to post Share on other sites