Oil temprature double checking ?


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Fuch77
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Oil temprature double checking ?

Post by Fuch77 » Thu May 17, 2018 11:28 am

Hello all.
I have fitted a smiths oil temperature gauge and sender to my bus running a standard 1500 engine.
It is reading of 80c . Can someone say is that correct ? or what temperature should it be please ?

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Re: Oil temprature double checking ?

Post by vwJim » Thu May 17, 2018 4:49 pm

Yes, that's right. 80-90 is the range you should be looking for.
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Re: Oil temprature double checking ?

Post by DOUGAL » Mon May 21, 2018 2:23 pm

Where is the sender located?

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Re: Oil temprature double checking ?

Post by Fuch77 » Mon May 21, 2018 7:47 pm

This is after 45 minutes of motorway driving at 55 on a hot day. Is that about right then ?
Im not sure if the needle is stuck or my bus is cooling better than i thought. lol
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Re: Oil temprature double checking ?

Post by Fuch77 » Mon May 21, 2018 7:51 pm

Sender is in the sump


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Re: Oil temprature double checking ?

Post by slippy8v » Mon May 21, 2018 8:34 pm

If you want to be really sure buy a food thermometer in Asda £4 just the right length for the dip stick hole, this is what I did to confirm gauge reading 182f or 83 c
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Re: Oil temprature double checking ?

Post by DOUGAL » Mon May 21, 2018 8:35 pm

Fuch77 wrote:
Mon May 21, 2018 7:47 pm
This is after 45 minutes of motorway driving at 55 on a hot day. Is that about right then ?
Im not sure if the needle is stuck or my bus is cooling better than i thought. lol
That looks good to me but I've heard from some people that if the sensor is in the sump you get lower readings because of the airflow under the vehicle cooling the sump??? I would say you learn about the temp of your engine the more you use the bus. If it always stays around 80-90 and one day you'll go out and it reads a lot higher you know something is not right. Hopefully someone on here can give better advice. I was thinking of installing a oil temp sensor myself but don't know the best place on a 1600SP engine.

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Re: Oil temprature double checking ?

Post by philsparks » Mon May 21, 2018 8:47 pm

Lime bug do a save my bug dipstick that is easy to fit and will flash your oil light at 225 degrees. For a few quid.



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Re: Oil temprature double checking ?

Post by 81dubber » Tue May 22, 2018 9:01 am

Ref Oil Temp Readings: I've always understood it to be the case that the Oil in the Sump is at its hottest as it hasn't passed through the Oil Cooler on its way to the Bearings etc.Re reading in earlier Safer Motoring Magazines i was always under the impression that the Top Temp for a standard 1500 would be 110 - 120 degrees c(time to slow down!).My Oil Temp Readings are from Dipstick Sender not Sump Plate.The highest my Bone stock 1500 Sp,Static Timed 7.5 btdc is 103c on an accurate VDO Guage.Coming back from recent AGM in Hot weather at a steady 50.

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Re: Oil temprature double checking ?

Post by Dougie » Tue May 22, 2018 10:31 am

slippy8v wrote:
Mon May 21, 2018 8:34 pm
If you want to be really sure buy a food thermometer in Asda £4 just the right length for the dip stick hole, this is what I did to confirm gauge reading 182f or 83 c

Brilliant idea, I know what I'm buying next time I go shopping...
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Re: Oil temprature double checking ?

Post by ted698 » Tue May 22, 2018 11:29 am

I have a VDO guage and the oil temp sender in the Oil relief blanking plug (Machine 7 sell them) - I found this was neater and seemed more accurate.

I would also test the gauge and sender together... I tested mine by holding it in a rolling boil kettle -took the kettle out to the van - make sure the side of the sender is earthed (lash up a cable from the body of the sender to an good engine earth) and keep the centre 'gauge' wire in place, ign on - hold it in the boiling water - the gauge should shoot up to 100c - also good for checking that 100c in your boiling kettle IS actually 100c (or close) on your temp gauge.

80deg seems a bit low to me on a stock 1500SP with inline cooler in the fanhousing - on the motorway my 1500SP would regularly exceed 110 and I'd have to back off for a few miles.
I converted it to a dog house cooler and it made a massive difference to oil temps - I can now cruise all day at 60-65 and not exceed 90deg.

That's why I'd check the accuracy of your gauge with a kettle or thermometer as above, they only really get hot on a long motorway run at sustained speed.


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Re: Oil temprature double checking ?

Post by Doka Dave » Tue May 22, 2018 12:17 pm

Dougie wrote:
Tue May 22, 2018 10:31 am
slippy8v wrote:
Mon May 21, 2018 8:34 pm
If you want to be really sure buy a food thermometer in Asda £4 just the right length for the dip stick hole, this is what I did to confirm gauge reading 182f or 83 c

Brilliant idea, I know what I'm buying next time I go shopping...
me too!
Awesome idea.
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Re: Oil temprature double checking ?

Post by Doka Dave » Tue May 22, 2018 12:19 pm

maybe I should stick a camera in the engine bay so I can read it whilst on the road lol
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Re: Oil temprature double checking ?

Post by ted698 » Tue May 22, 2018 3:39 pm

I have a VDO guage and the oil temp sender in the Oil relief blanking plug (Machine 7 sell them) - I found this was neater and seemed more accurate.
Actually I tell a lie - I just looked at M7 and can't find it - Heritage sell them though.... see below. You remove the oil relief cap on the bottom of the engine - its the very big screw slot head bolt looking thing under the LH side when you look under the bumper (so rear of engine. rear of van) you remove the slotted cap (you need a BIG screwdriver - or fashion some sort of screwdriver blade - I think I used my socket set which has screwdriver heads in it, used the biggest flat head one - it cracked it off no problem - take the oil cap off, a tiny amount of oil may come out, but its minimal, then screw in the new sender in its place.

Note - If the oil control spring comes out, push it back in place and fit the sender - the sender just replaces the slotted cap - it s very neat and out of the way temp sensor - much less vunerable than the sump plug type and much neater than the VDO oil dispstick one I had before (and its much more accurate, I found my dipstick one was under reading by about 10deg)
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Re: Oil temprature double checking ?

Post by Fuch77 » Wed May 23, 2018 9:07 am

Thanks guys for all the info. Puts my mind at rest

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