Oil Pressure changes
#11
Update. I checked the oil after it cooled and it was at the add mark so I put in a qt of 20-50 (all I had) and the pressure seemed to stabilize a bit, but it was a short trip. Will check on the ride home and report back.
Thanks also for the info on sender location. I will check that this weekend.
Thanks also for the info on sender location. I will check that this weekend.
#14
Guys,
The pressure stabilized on the ride home so it appears to be either bad oil, the low level or a combination of the two that was affecting it. In either case, once I added the thicker new oil it acted exactly like the video Kejobe posted earlier. Will still do the manual pressure test this weekend to verify the gauge, but crisis seems averted for now.
Thanks again.
The pressure stabilized on the ride home so it appears to be either bad oil, the low level or a combination of the two that was affecting it. In either case, once I added the thicker new oil it acted exactly like the video Kejobe posted earlier. Will still do the manual pressure test this weekend to verify the gauge, but crisis seems averted for now.
Thanks again.
#18
#19
Well, i have done lots of research of this very subject. lol I get a lot of people that ask me what the benefits of running a certain oil are (i'm an AMSOIL dealer btw). People usually only pay attention to the front number in a oil weight designation. lol what they dont realize or understand, is that those numbers, are in regards to weight (or viscosity) with a certain temperature parameter. That being said, the front number is the weight (viscosity) of oil at Winter temperatures. Thats why it says "W" after the number. So lets say you switched from 10w-40 to 15w-40. You havent changed the weight of the oil. Its STILL 40 weight oil. what you HAVE changed however, is the viscosity of the oil at "winter" temperatures (or startup temperatures). Once the engine is warmed up to operating temperature, the front number goes out the window. It doesnt mean anything anymore, because you're still running 40 weight oil, whoes weight(viscosity) is determined at operating temperatures of around 210*.
hope that clears things up a little bit
hope that clears things up a little bit
#20
Thanks wjxavier. It does help. Given the beautiful winters we have in Cleveland, along with the usually balmy accompanying temps, I think your advice on 5w-30 in the winter might be the ticket. Will give it a go. I will then switch it as you suggest in the spring for the 2-3 weeks of good weather we have.
Related, is there a better type oil for flat tappet lifter engines? I had heard Lucas makes an oil designated as a racing oil that is supposed to lubricate these older engines better. Do you know what the particular characteristic is that makes it better?
Related, is there a better type oil for flat tappet lifter engines? I had heard Lucas makes an oil designated as a racing oil that is supposed to lubricate these older engines better. Do you know what the particular characteristic is that makes it better?