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Rich Biebel · 09-02-2019, 01:05 PM

I would doubt the ET changed that much just from the oil level and windage...BUT ...

I almost always find that my MPH is down a little right after I change the oil in my 565 in my dragster.....and it has an accusump....and when I change it I put the same amount of oil in it....or so I think...

Since its a S/C car I can't really see an ET issue but like I said the MPH might be down one or two and I am usually scratching my head wondering where that MPH went....

And then it usually comes back after some runs.....

Losing ET is often a real mystery.....

My EFI Firebird did exactly that and for no apparent reason.....and MPH was still about the same at the time...

09-02-2019, 01:05 PM	#7
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,275 Likes: 25 Liked 510 Times in 200 Posts	Re: Oil Level I would doubt the ET changed that much just from the oil level and windage...BUT ... I almost always find that my MPH is down a little right after I change the oil in my 565 in my dragster.....and it has an accusump....and when I change it I put the same amount of oil in it....or so I think... Since its a S/C car I can't really see an ET issue but like I said the MPH might be down one or two and I am usually scratching my head wondering where that MPH went.... And then it usually comes back after some runs..... Losing ET is often a real mystery..... My EFI Firebird did exactly that and for no apparent reason.....and MPH was still about the same at the time... __________________ Rich Biebel S/C 1479