Switch to 5w30 has made my pressure gauge crazy - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BDotG · 05-01-2016, 11:51 PM

Hi All,

So to set some background -

Innovate MTX oil pressure + temp gauge. Just replaced the pressure sender with a new one about 1.5 months ago. Both temp and pressure read off a beatrush sandwich plate between filter.

Changed to LiquiMoly 5w30 about 4 days ago from Mobil1 0w20.

My oil pressure readings have gone insane, on acceleration I get anywhere from 0-100+ within seconds of each other. Super erratic like.

I thought it was a bad filter that I got so I switched it out with another new mobil1 filter but still being all weird.

The gauge was totally fine before I switched over. Any ideas?

Wayno · 05-02-2016, 12:25 AM

Change back to 0w20. No brainer.

Teseo · 05-02-2016, 12:49 AM

And put oem filter

Irace86 · 05-02-2016, 02:39 AM

Quote:

Originally Posted by Wayno

Change back to 0w20. No brainer.

Ummm why? The pressure gauge should measure pressure. Is it oil specific? The sensor itself may not even be vehicle specific--just the adapter. 0-20 or 5-20 is recommended but 5-30 is not crazy. I feel like there is a calibration needed or a bubble is against the sensor or something.

Quote:

Originally Posted by Teseo

And put oem filter

Again, this shouldnt matter. There are plenty of people and teams running aftermarket filters.

Irace86 · 05-02-2016, 02:49 AM

http://articles.chicagotribune.com/2...e-oil-pressure

Make sure you put enough oil but it sounds like a sending unit issue.

Hagbard · 05-02-2016, 08:40 AM

Check the wires on the sensor if the one wires tab is lose even a little the wire will bounce on and off the post and will do execatly that had the same problem the other day. Hopefully thats all thats wrong with it for you, I have the exact same setup.

byun · 05-02-2016, 11:33 AM

Move the pressure sender to the galley port. I had originally had my sender in the galley port and then tried the sandwich plate location and the pressure readings were bouncing all over. Went back to the galley port and it stabilized and reads normal again.

Quote:

Originally Posted by BDotG

Hi All,

So to set some background -

Innovate MTX oil pressure + temp gauge. Just replaced the pressure sender with a new one about 1.5 months ago. Both temp and pressure read off a beatrush sandwich plate between filter.

Changed to LiquiMoly 5w30 about 4 days ago from Mobil1 0w20.

My oil pressure readings have gone insane, on acceleration I get anywhere from 0-100+ within seconds of each other. Super erratic like.

I thought it was a bad filter that I got so I switched it out with another new mobil1 filter but still being all weird.

The gauge was totally fine before I switched over. Any ideas?

JazzleSAURUS · 05-02-2016, 12:00 PM

My pressure readings are nice and consistent from the galley port. It's where I ran my pressure sensor on my EJ subies too.

BDotG · 05-02-2016, 12:16 PM

Quote:

Originally Posted by byun

Move the pressure sender to the galley port. I had originally had my sender in the galley port and then tried the sandwich plate location and the pressure readings were bouncing all over. Went back to the galley port and it stabilized and reads normal again.

This is my next course of action, i've always figured that it might not be the best place to read from. The temps are always normal reading from there but seems like a place to get a lot of fluctuation.

BDotG · 05-02-2016, 12:17 PM

Quote:

Originally Posted by Irace86

Ummm why? The pressure gauge should measure pressure. Is it oil specific? The sensor itself may not even be vehicle specific--just the adapter. 0-20 or 5-20 is recommended but 5-30 is not crazy. I feel like there is a calibration needed or a bubble is against the sensor or something.

Again, this shouldnt matter. There are plenty of people and teams running aftermarket filters.

Yeah I have to agree, the oil nor the filter should matter. I am using a fairly expensive nice filter that I have run from the beginning with zero issues.

Guillaume · 05-02-2016, 12:22 PM

Quote:

Originally Posted by BDotG

Yeah I have to agree, the oil nor the filter should matter. I am using a fairly expensive nice filter that I have run from the beginning with zero issues.

Just to be clear, you've been running the same part number but you've changed your filter at every flush, right??

BDotG · 05-02-2016, 12:49 PM

Quote:

Originally Posted by Guillaume

Just to be clear, you've been running the same part number but you've changed your filter at every flush, right??

Yes lol Fresh filter with every oil change. Not that much of an idiot.

JazzleSAURUS · 05-02-2016, 12:59 PM

I've had issues with aftermarket oil filters occasionally, a particular car may not like a particular filter. My Forester XT routinely blows out the media of Purolator fitlers, causing bypass failure, this happened within 500 miles two times, so I switched to S2K/RX8 filters. Problem resolved.

dustmann · 05-02-2016, 01:24 PM

I have the same gauge, and I replaced my stock pressure sender with the Innovate sender. I get no fluctuations, my pressure is consistently about 20-30psi higher with 5w30 than it was with the stock 0w20 oil.

I would check to make sure your sensor isn't grounding out somewhere. My old prosport oil pressure gauge did this when the sensor wire got partially melted and was grounding on the engine.

05-01-2016, 11:51 PM	#1
BDotG Senior Member Join Date: Jan 2015 Drives: Asphalt 2013 FR-S Location: Vancouver, BC Posts: 253 Thanks: 38 Thanked 126 Times in 73 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Switch to 5w30 has made my pressure gauge crazy Hi All, So to set some background - Innovate MTX oil pressure + temp gauge. Just replaced the pressure sender with a new one about 1.5 months ago. Both temp and pressure read off a beatrush sandwich plate between filter. Changed to LiquiMoly 5w30 about 4 days ago from Mobil1 0w20. My oil pressure readings have gone insane, on acceleration I get anywhere from 0-100+ within seconds of each other. Super erratic like. I thought it was a bad filter that I got so I switched it out with another new mobil1 filter but still being all weird. The gauge was totally fine before I switched over. Any ideas? __________________ Build Thread: http://www.ft86club.com/forums/showthread.php?t=87104 // Save the fenders

05-02-2016, 12:25 AM	#2
Wayno Senior Member Join Date: Apr 2014 Drives: Toyota 86 GTS Location: Australia Posts: 1,129 Thanks: 453 Thanked 896 Times in 424 Posts Mentioned: 211 Post(s) Tagged: 0 Thread(s)	Change back to 0w20. No brainer. __________________ rom downloads, information and examples Toyota 86 GTS OFT - Guide To Dialling In OTS Base Tune OFT - Example Alternate Maps for AT, 98RON, E85, MAF Scales

05-02-2016, 12:00 PM	#8
JazzleSAURUS Senior Member Join Date: May 2015 Drives: 15 BRZ LTD, 05 FXT Location: Western MA Posts: 1,032 Thanks: 561 Thanked 560 Times in 353 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	My pressure readings are nice and consistent from the galley port. It's where I ran my pressure sensor on my EJ subies too. __________________ SOLD: 2015 WRB BRZ Limited ('02 WRX BBS, S-04's, Stoptech Sport pads, MXP SP, AVO drop in filter, Mishimoto Intake tube, decatted header, OFT 93 Stage 2 EL Tune, Kartboy rear shifter bushing, Whiteline transmission and subframe lockout bushings, ST Coilovers, SPC Camber bolts w/smaller crash bolt, SPC LCA's & SPC Toe Arm bushings, Red TOMs, TRD Wing.)

05-02-2016, 12:59 PM	#13
JazzleSAURUS Senior Member Join Date: May 2015 Drives: 15 BRZ LTD, 05 FXT Location: Western MA Posts: 1,032 Thanks: 561 Thanked 560 Times in 353 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	I've had issues with aftermarket oil filters occasionally, a particular car may not like a particular filter. My Forester XT routinely blows out the media of Purolator fitlers, causing bypass failure, this happened within 500 miles two times, so I switched to S2K/RX8 filters. Problem resolved. __________________ SOLD: 2015 WRB BRZ Limited ('02 WRX BBS, S-04's, Stoptech Sport pads, MXP SP, AVO drop in filter, Mishimoto Intake tube, decatted header, OFT 93 Stage 2 EL Tune, Kartboy rear shifter bushing, Whiteline transmission and subframe lockout bushings, ST Coilovers, SPC Camber bolts w/smaller crash bolt, SPC LCA's & SPC Toe Arm bushings, Red TOMs, TRD Wing.)

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05-02-2016, 12:49 AM	#3
Teseo Senior Member Join Date: Jun 2014 Drives: frs Location: Gunsai Posts: 4,951 Thanks: 7,461 Thanked 2,978 Times in 1,801 Posts Mentioned: 23 Post(s) Tagged: 2 Thread(s)	And put oem filter

05-02-2016, 08:40 AM	#6
Hagbard Member Join Date: May 2013 Drives: 2013 BRZ Location: Durham, Ont, Canada Posts: 83 Thanks: 44 Thanked 30 Times in 25 Posts Mentioned: 0 Post(s) Tagged: 1 Thread(s)	Check the wires on the sensor if the one wires tab is lose even a little the wire will bounce on and off the post and will do execatly that had the same problem the other day. Hopefully thats all thats wrong with it for you, I have the exact same setup.

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