<div dir="ltr">Yes he did , and I understand how this works. And this has to do with oil weight and of course bearing clearance. I use SAE 40 even when I rebuilt this engine and on a hot freeway run I'd come to a stop and the oil light would come on. This is why I didn't go down to SAE 30 , 30 may be fine <br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jul 19, 2020 at 9:42 AM Mike Fisher <<a href="mailto:fisherfarms@gmail.com">fisherfarms@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Jim told us that oil pressure isn't important. It's the oil flow?<br>
<br>
On Sun, Jul 19, 2020 at 9:38 AM William Jahn <<a href="mailto:willjahn975@gmail.com" target="_blank">willjahn975@gmail.com</a>> wrote:<br>
<br>
> The only thing I don't quite understand is on what basis has anyone tested<br>
> these gauges to say for certain they are not accurate or at least very<br>
> close to being so. The only true way to know would be to use a good screw<br>
> in oil pressure gauge on the cooler fitting and check that against what the<br>
> electric VDO setup reads.<br>
><br>
> I feel as long as the wiring to the senders and gauges is done properly<br>
> and the grounds are done properly they will be as good as they can get.<br>
> I know my old oil pressure gauge had issues because just with the key on<br>
> the gauge read 10 PSI and the sender should read 10 OHM engine off , my old<br>
> one read from 9.5 ohm to over 95 ohm just by tapping it with my fingers .<br>
> The new one stays at 10 ohm engine off . It reads completely different from<br>
> the old ones. Before this I even replaced the wiring and put the ground on<br>
> the battery to the rear seat wall ground . None of that changed a thing. I<br>
> added inline fuses to the gauges between the fuse box and battery positive<br>
> on the gauges just in case and use a relay for the power source. When I<br>
> first installed them direct to a spare key on fuse on a 73 that's #12 they<br>
> didn't seem to read proper so I used a 12 volt relay used fuse 9 hot all<br>
> the time that powers that insane key buzzer for the feed source then fuse<br>
> 12 to the relay coil and that fixed the issue.<br>
><br>
> On Sun, Jul 19, 2020 at 8:56 AM Hal Sullivan <<a href="mailto:tristessa@tristessa.us" target="_blank">tristessa@tristessa.us</a>><br>
> wrote:<br>
><br>
> > On 7/18/20 11:55 PM, William Jahn wrote:<br>
> > > I can't recall a car or truck I ever had that didn't have at the<br>
> very<br>
> > > least a water temp and oil pressure gauge as well as a light or two.<br>
> > ><br>
> > I inherited an '81 Ford Escort from my grandmother in the late '90s,<br>
> > back before our first ACVW. It had a speedometer, a gas gauge and some<br>
> > idiot lights.<br>
> ><br>
> ><br>
> > I'll take an electric oil pressure gauge over no gauge any day of the<br>
> > week. Even without absolute accuracy, they're useful for spotting<br>
> > problems before they really become PROBLEMS .<br>
> ><br>
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