western Posted July 21, 2020 Share Posted July 21, 2020 Similar sender to my VDO one & oil pressure gauge, got my gauge from USA at this site www.defender.com, as I wanted a psi reading gauge, I can do some photo's in morning at start up showing the pressure at idle at start up & idle. Quote Link to comment Share on other sites More sharing options...
Peaklander Posted July 22, 2020 Author Share Posted July 22, 2020 Thanks Ralph. My concern is/was the final pressure drop once the oil gets up to final temperature. It’s then <2Bar (28) when driving and at idle the value is <1.5Bar (21). Quote Link to comment Share on other sites More sharing options...
Maverik Posted July 22, 2020 Share Posted July 22, 2020 My aged 200tdi, with oil temp at 99deg, I see running pressure of 33-36psi and idle pressure of 12-15psi, this of course goes up slightly on cooler oil temp. 1 Quote Link to comment Share on other sites More sharing options...
western Posted July 22, 2020 Share Posted July 22, 2020 4 hours ago, Peaklander said: Thanks Ralph. My concern is/was the final pressure drop once the oil gets up to final temperature. It’s then <2Bar (28) when driving and at idle the value is <1.5Bar (21). Just did these 2 photos first start today, engine at idle, throttle not touched Quote Link to comment Share on other sites More sharing options...
Peaklander Posted July 22, 2020 Author Share Posted July 22, 2020 Thanks for your input guys. I don't have a problem at start-up as pressure is right up nearly at 4 Bar. The relief valve might even be operating (3.9 Bar / 55psi) but if it is, I doubt that it would still be leaking pressure away as the temperature increases and the oil thins. I really need to do a decent drive as these 30minute pootles around aren't much use. Coming home just now after about 14 miles and lots of hills we were again below 2 Bar and idling at just over 1 Bar. Quote Link to comment Share on other sites More sharing options...
Maverik Posted July 22, 2020 Share Posted July 22, 2020 I don't generally worry about idle pressure unless my oil light comes on (god forbid) - but I use the numbers Ralph posted in the topic attached as "expectation" range of operation. (25-54)psi - lowest I've seen on my engine is 30psi when I've been in 5th gear with 96-99deg C oil but low ish revs - obviously not getting full output from the oil pump, in which case I drop a gear and it bumps it back up to 33-36psi. (15w40 Oil - btw). Another topic on oil pressure which might be of use. - mainly regarding 200's but still relevant. 1 Quote Link to comment Share on other sites More sharing options...
western Posted July 22, 2020 Share Posted July 22, 2020 there's some oil pressure readings in my engine rebuild thread, IIRC Mav & myself were comparing numbers 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.