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Old 09-27-2019, 01:21 PM
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You mean, "RTFM"?? Who would do sucha thing?

If one were to do so, the DA50 manual states to use low to mid octane gas as stock and high octane with a tuned pipe.
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Old 09-27-2019, 02:26 PM
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IF directed to my last post ya lost me KMATCH, here is my original post.

I am hesitant to post in this thread as we all know how they have a tendency to wonder. However, I am curious about the recommended octane ratings in DA engine manuals. I have typically used 87 in all my gas burners without issues including DA 50s however DA 35 and 60 engine instructions (ya I actually read them) indicate in capital and underlined letters to use premium fuel. Perhaps because they have higher compression and need it to avoid preignition? I do not want to mix and carry two different fuel containers soooo the easy answer is run 91. Anyone here run 87 in their DA 35 or 60 engines and if so what have you experienced?
Let the games begin

I am however still curious just for my edification if anyone here has actual hands on experience running their DA35 or 60s on 87 and their observations.
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Old 09-27-2019, 02:52 PM
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FGNewbie curious if any of those were a 35 and/or 60?
Thanks.
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Old 09-27-2019, 03:13 PM
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I ran 87 in my DA60 without any issues. We don't really load these engines down too much so detonation is not as much of a concern even if the octane rating is a little low. If you don't ping on the ground at WOT when fully warmed up then it should be fine in the air (assuming timing and fuel are within range)
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Old 09-27-2019, 05:03 PM
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Quote:
Originally Posted by Whiskey Bravo View Post
IF directed to my last post ya lost me KMATCH, here is my original post. .
My post was more of a than a regarding the generalities from Dave.

The original question was about a da50. By the manual, if it comes out of a pump it's likely Ok to use unless it has a tuned pipe. Yeah, DA has higher performance setups but today's engine of choice will be happy with 87. Or 91. Even 93 but that will be a waste of money although possibly running a couple degrees cooler and 1 or 2 rpms lost. I use 91-93 in all of mine but if only using one, and it could squeak by on 87, that's all I'd carry. That is where the OP is at the moment.
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Old 09-27-2019, 07:46 PM
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I’ve run or ran 87 in my 70, 100, 120s, and 150.
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Old 09-27-2019, 08:59 PM
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And I have run the VP in my OS 33GT, DA 70, DA 50, & DA170
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