 | Date | Question | | Answer |
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| 06/16/2009 | | | Automatic transmission fluid (ATF) would probably work fine in your primary but in the end you will have to decide if you are satisfied with its performance. Every biker “feels” his shifts and knows ... |
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| 09/18/2008 | | Using Mobil 1 15W-50 in Harley-Davidsons | | Several independent tests have shown that Mobil 15W-50 is virtually similar to Mobil 1 V-Twin 20W-50 oil. Since Harleys utilize separate oil supplies for the primary and tranny, is there any valid rea... |
| | As long as the primary and tranny are separate sumps and there is no concern for clutch performance, then Mobil 1 15W-50 can be used in a Harley. |
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| 12/15/2007 | | What Oil to Use in Harley-Davidson Primary Drive | | Hi, I have been using your Mobil 1 MX4T (Mobil 1 Racing 4T 10W-40) for 4 years and love it in my Japanese motorcycles. I have purchased a '08 Harley and want to continue to use Mobil 1 but use 20W-50 ... |
| | You actually have a couple of choices for the primary drive. The optimum product would be Mobil 1 Racing 4T 10W-40 but it is also okay to use Mobil 1 V-Twin 20W-50. |
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| 08/16/2006 | | | Mobil 1 V-Twin 20W-50 fully synthetic motorcycle oil is designed specifically for V-twin motorcycle engines like Harley Davidson. This product provides outstanding performance and protection and has b... |
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