AMSOIL Normal and Intermittant Oil Operating Temperatures
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- เผยแพร่เมื่อ 30 พ.ย. 2024
- Motor oils are designed for normal and intermittent operating temperature ranges. AMSOIL synthetic motor oils operate at a significantly higher temperature than their petroleum counterparts.
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My 2021 GMC w/3.0 Duramax hit 291 deg F Engine oil temp towing my RV over Donner pass to Reno. Was using 0w-20 DexosD approved Mobil 1 with a bottle of ProOne in the oil.
Thanks for the unique, informative video. I just have a question about the Motorcraft oil that is been used by Ford company as OEM motor oil. They recommend using only 5W20 on the Owner's Manual, but they say you are better off using 5W30 to protect the engine and 5w20 for fuel consumption USA CAFE standard. Is that true?
Check out bobistheoilguy forums. They have a better knowledge then I do, but my understanding is that it depends on if you have some form of variable valve timing. VVT engines can be trying to picky about oil viscosity, but engine like Ford 4.6l 2 valve that I have, literally don't care about viscosity.
Dan, I was looking at some of the oils on Amsoil and noticed the trend of higher Winter grade have better NOACK volatility % weight loss than the 0W and 5W. I know that diesels or heavy towing trucks tend to prefer higher 15W or higher. I imagine this is so because it holds stronger higher heats or more severe like towing and etc. My assumption that the additives that's used to thin the oil at cold crank, causes it to break easier at higher temps. Is this correct?
Sort of. Assuming the same hot viscosity, oils with a lower winter viscosity tend to be made from a thinner base oil with more viscosity modifiers, which help keep the oil from thinning out at high temperatures. Naturally, the thinner base oils often have higher volatility and a lower HTHS viscosity. Over time, the viscosity modifiers can in fact break down from heat and mechanical shearing and cause the oil to thin out. An oil made from a heavier base oil with less viscosity modifiers (higher winter rating) tends to withstand extreme heat better assuming all else is equal, but all else is not always equal since higher quality base oils can naturally have a more stable viscosity with less additives.
Dear sir , if I understand you correctly that’s would mean that I will be safe to run Amsoil signature 10w30 In hot summer as extreme as 130 degrees. I know that I should reference the owner manual, but my main question is can that oil withstand the ambient temperature that over 130 degrees?!.
Thanks
It is important to remember that the cooling system (radiator) should be able to maintain the operating temp of the engine at the factory setting. This is probably between 195*F to 205*F. Granted, 130*F ambient temps will challenge the cooling system and the vehicle might overheat. The Amsoil Signature Series will maintain protection under these conditions. If you observe oil pressure dropping too low go up one grade to Amsoil 10W-40 Premium Protection.
so how can you identify if the oil is not at its operating temperature?
sensor
You can sometimes get pretty close with common sense. If you just started the engine, it's obviously not warmed up yet. Oil warms up slower than coolant, so it should be sufficiently warm after driving for a few minutes after the coolant reached its normal temp. If you are beating on the car at the race track or hauling heavy loads up steep grades in hot weather, the oil will probably get a bit hotter than ideal. If you want to know for sure instead of guessing, installing an oil temperature gauge is simple and cheap enough. Some vehicles can show oil temp on the dash or report it to an OBD device like a Scangauge, but a lot of vehicles don't have an oil temp sensor.
@@averyalexander2303 I fully agree. I just installed a oil pressure and oil temperature gauge in my grand marquis over the weekend. Total cost was around $275 (glowshift and same brand pods and extra 14ga wire.)
Sir. I have subaru forester 2016.
I'm currently living in middle East where summer temps reaches to 40-45C.. subaru recommends 0w20, is it ok to use it with our desert heat temp. Or should I use heavier 5w30? Will it not cause any damage, as the manufacturer recommends 0w20. By the way, I'm out of warranty.. planning to do my own oil change.. thanks
My car runs 80% hi way, sometimes straight 3hours hi way trip, with dash oil temp registering at 100-110C.. ive read in some american forums, suggesting to stick with manufacturers 0w20, cause subaru engines have tight tolerances requiring this viscosity.. is it true sir,? Or this just for their epa mpg.. thank so much. On subscriber here.
@@markusmords9662 You can run a 5W-30 without any problems. With your oil temps if you are using a quality synthetic you have nothing to worry about with the 0W-20. If it were my car I would use 5W-30 premium synthetic. Amsoil is the first choice (PAO/Ester basestock) second choice Mobil Annual Change synthetic.
You can run a 5W-30 without any problems. With your oil temps if you are using a quality synthetic you have nothing to worry about with the 0W-20. If it were my car I would use 5W-30 premium synthetic. Amsoil is the first choice (PAO/Ester basestock) second choice Mobil Annual Change synthetic.
Ok.. thank you for the advice sir.
You whant amsoil signature 0w-30 this best
Great video.. Dan.. by the way, Whats the best SAE oil to use in the middle east.. High Temperature of the Engine and scourging hot weather will add more heat.. AMSOIL is not that popular in the middle east hoping you can expand your products here..
Yes Amsoil needs to expand to the middle east. If you can't find Amsoil then look for Mobil annual change. You really need a good PAO based synthetic for the high temps. If you have a contact in the country your in I can get them in touch with Amsoil's International desk to see if they can find a way to import Amsoil.
If you can't get Amsoil use Mobil Annual Change
what about synthetic blends ? They`re somewhere in the middle between mineral an PAO?
It depends. Some synthetic blends are only 10% synthetic oil and others are about 50/50. The only true way to know is to blend your own oil. ( Like mix 2 quarts of Quaker State, and 3 of Amsoil in a oil jug)
I'm willing to bet over half of engine failures are due to improper oil viscosity added by owner or waiting to long in between oil changes. Whats your opinion people?
As an auto tech, I don't fully disagree with you. I think negligence and "rushed engineering" is about neck and neck for newer engine failures. The older engines really only suffered if you heavily abused them or neglected them.
At what low temperature does 30 weight oil become 30 weight?
Jeff, your question has no simple answer. Each oil will be rated with a Viscosity Index and the index is designed to show how responsive the oil is to temperature changes. The higher the Viscosity Index the less responsive the oil is to temperature. Oil viscosity on the bottle is measured at 212*F so a SAE 30 will have a measured viscosity of 30 at 212*F. If it is a straight 30, not a multi-viscosity, then it will get thicker as it gets cooler. The rate is dependent on the type and quality of the basestock. Some high quality synthetics like Amsoil can achieve a 10W-30 rating on a straight 30 viscosity oil. This simply means the synthetic base stock has a naturally high Viscosity Index.
Dan Watson that makes sense. I have a 2019 Dodge Charger with a 392 and the manual says to use a 0w-40 and it blows my mind that they would use an oil with such a wide band of viscosity. I use 0w-40 Amsoil signature but the factory thermostat is 203*. When I watch the engine oil gauge it holds at around 225-230 cruising speeds, so I’m sure the 40 viscosity is battling high sustained oil temps. I want to put a 180-190* thermostat in which should calculate to 200-205* oil temp. Should I continue to use the 0w-40 or would I be better off using 0w-30? This engine does have VVT so viscosity will have an effect on it.
@@FlatPlaneCranky Don't use a low temp thermostat, it will do more harm than good for reasons I don't have time to explain. As he said in this video, 230 degrees is perfectly normal and easily handled by a good synthetic oil, you have nothing to worry about. Just use the recommended oil, change it regularly, and enjoy your sweet ride :)
A liquid cool engin works at 70c - 80c depending on the thermostat setting so how can the working tempature of the oil be higher? I can understand in a turbo charged engins haveing a higher oil temperture but not in the range mentioned in the video! I´v changed oil and filter on a hot engin and have never been scalded.
I know this is a late reply but it is good to clear this up. The basic principle of heat transfer is that heat will be transferred from hot to cold. Oil lubricates the hottest parts of the engine and transfers most of that heat to the water jacket of the coolant system. In order for the heat to transfer from the oil to the water the oil must be hotter than the water. If the Engine water / coolant is 205*F then the oil will have to be hotter. As the oil drains down through the block from the top of the head it will release heat to the areas being cooled by the radiator coolant. Some cooling will take place in the oil pan as air passes over the pan when the vehicle is moving. The harder the engine works the more fuel that is converted to heat energy in the combustion process, ultimately converted to mechanical energy in the force exerted on the piston and then converted to torque to turn the crankshaft. This will make the oil even hotter and in many cases the installation of an oil cooler will be called for in heavy loaded engines.
You should wstch this
Havoline oil for me lol