Some current oil analysis info, ongoing testing.
Jeff - The actual oil temperature is at least ~ 20 - 30 degrees hotter. The OE sensor is in the oil drain plug. If you move the sensor to the plugs in the oil filter housing, you will see the temperature rise 
. Still I rarely see more than 200* (VDO gauge with sensor in oil filter housing).
. Still I rarely see more than 200* (VDO gauge with sensor in oil filter housing).
Jeff - The actual oil temperature is at least ~ 20 - 30 degrees hotter. The OE sensor is in the oil drain plug. If you move the sensor to the plugs in the oil filter housing, you will see the temperature rise . Still I rarely see more than 200* (VDO gauge with sensor in oil filter housing).
. Still I rarely see more than 200* (VDO gauge with sensor in oil filter housing).You can get the gauges and sending units at 42 Draft Design (they have very good how to's as well). I personally like VDO gauges - quality and clean look.
http://store.42draftdesigns.com/Lanc...ptor_p_54.html
http://store.42draftdesigns.com/VDO-...ware_c_22.html
Call them if you have any questions....
Jeff - The actual oil temperature is at least ~ 20 - 30 degrees hotter. The OE sensor is in the oil drain plug. If you move the sensor to the plugs in the oil filter housing, you will see the temperature rise . Still I rarely see more than 200* (VDO gauge with sensor in oil filter housing).
. Still I rarely see more than 200* (VDO gauge with sensor in oil filter housing).
I would have to disagree with what you are saying on this Chris. I am not disagreeing that there is an oil temperature variance, but that would be throughout the whole lubricated part of the motor and where the oil comes and goes.
I believe, that the 20-30F difference you saw is not the fact that your new oil temp location is giving a more accurate temp which is implied, I feel it is more that the fact of where it is placed. The oil pan is Steel. The oil Filter housing if I am not mistaken is Aluminum. We all know that Aluminum absorbs and dispresses heat better than steel. My belief to why your temps are 20-30F higher is simply because the aluminum is absorbing the heat from the oil and since the sensor is screwed into that alum housing, it too is getting the heat.
Either way, its minimal. In my OEM guage's case, its in Celsius and 30F diference on a Celsius gauge is only 1 degree. So if your looking at my gugae as pictured, can you tell me the difference on 1 degree Celsius? Thats the point im making.
Anyway, either way, the oil temp guage is just an APPROXIMATE temp anyway, no matter where it is mounted.
When I solo II or am on the dyno I never see temps over 100C which is about 212F and in day to day driving I never see over 80C and in the heat of the summer (120F where I live) I see around 90C.
The guys that I know that race, and when I mean "race" im not talking solo 2 stuff like I do, they do Time Attacks, pushiing 500-700whp Evo's around a track at 150+MPH and when I look in their Evo's what do I see? The OEM guage pack that came in ther RS's. When I ask them why dont you run better guages this is their reply, "Jeff, at a 150MPH + the last thing I am looking at is a guage, and this 2.0 is so strung out that if oil pressure drops I know it before the guage does".
So take that for what its worth.
Here is a pic of my guage gooing to work this morning. Again, I feel these temps are a good APPROXIMATE temp (My guage is in Celsius not F). Again, no need for a 50w oil.
Jeff
Yeah
That may be the case, but if one reads normal temp at or above what coolant temps are at, and the other reads below normal coolant temps, then I think it's pretty obvious as to which location is MORE accurate than the other.
That supports my point more than it does yours.
I bet it's close to 190-200F
In general, I can agree with that. I think they're a great tool for saving you from a potential engine rebuild, but the more accurate they can be the better.
In general, I can agree with that. I think they're a great tool for saving you from a potential engine rebuild, but the more accurate they can be the better.
Anyway, its irrelevent to Tommi's Thread and I am sorry for posting that pic up. Now back to the VOA's and UOA's of which this thread was started anyway. Bickering over 30F difference in Oil temps means almost nothing in 95% of all Evo's on the road anyway. Its just getting silly.
Jeff
Jeff
Tommi, of course me being the AMSOIL guy is should have a bank of lab results comming this way, for SSO, HDD, dominator VS mobil ect.... once ig get some time to upload and find them i will
The only reason I put the pic up was to prove that in my particular case, and most likely 90% of all Evo drivers out there, you really don't need or ever will need a 50w oil. The oil temps just don't get high enough to justify it. Even the Redline 5/30 I am running now, if I was tracking the car hard and saw higher oil temps, the Oil would still be in good shape. For me to exceed the temp range of this Redline 5/30 I think something else would go before the oil would IMO. So the guage is not the "Bible" of oil or engine health.
My point on the placement of a sensor in the oil filter housing is this. I said it once and I will say it again and be done with it. You are stating because you have higher temp readings there that is your justification that it is a more accurate reading. I disagree with that. BOTH places are Approximate. The reason why your seeing higher temp readins IMO is the fact that your sensor is placed in an aluminum housing of the oil filter. Aluminum absorbs heat quicker and disapates heat quicker than steel. The aluminum housing is getting hotter by the hot oil going through it. Thus your have hotter temp readings. Not that they are more accurate. Again, its a good "approximate" as is the oil pan. I seriouisly doubt that the 1 foot difference in the sensor loaction is going to make the oil cool down 30F.
