- Joined
- Mar 20, 2023
- Messages
- 144
Are there any write-ups on the difference of time, or lack of difference, it takes for different viscosity oils to get up to operating temperature? My search wasn't very successful. Thanks.
That's why I was looking for a standardized study that only changed viscosity. It's okay if it doesn't exist. I was just curious how much viscosity would impact warm-up times, if at all.It’s not just the oil, it’s the engine, the outside temperature, the driving routine. Too many factors here to get any standard results.
Some recently uploaded wear charts from studies show increased wear while oil is not at operating temperature. Decreasing the amount of time spent getting up to temp may have an effect on wear.Why would it matter?
You will in real life never see a difference. The same thing with oil filters yes a better filter is nice but engines well cared for will out last the the rest of the vehicle. It is a numbers game.Some recently uploaded wear charts from studies show increased wear while oil is not at operating temperature. Decreasing the amount of time spent getting up to temp may have an effect on wear.
Again, this is mostly just curiosity. An interesting thought.
Agree to disagree, there are some truly atrocious engines out there right now that I doubt will outlast the rest of the vehicle.You will in real life never see a difference. The same thing with oil filters yes a better filter is nice but engines well cared for will out last the the rest of the vehicle. It is a numbers game.
IIRC there's a small window where heat has thinned the oil and AW additives/VII's haven't fully activated. From my own anecdotal experience my oil temp gauge starts moving at the same point in the drive regardless of exterior temps and oil weight (0w30 sub 3.5 HTHS to 5w40 HTHS over 3.5).Some recently uploaded wear charts from studies show increased wear while oil is not at operating temperature. Decreasing the amount of time spent getting up to temp may have an effect on wear.
Again, this is mostly just curiosity. An interesting thought.
I think I know the study you're referring to, and in that study, the increased wear was associated with low engine temperature in general (coolant, oil, and everything else), not specifically low oil temperature. The increased wear may be largely related to thermal expansion and tolerances.Some recently uploaded wear charts from studies show increased wear while oil is not at operating temperature. Decreasing the amount of time spent getting up to temp may have an effect on wear.
No matter what oil or other treatment a poorly built or designed engine will be a poorly designed or built engine. I worked for 23 years at a forklift dealership and we maintained lots of pickups , vans sweepers etc and most of the peoples preconceived notions are just that. There is all the stuff that seems to make sense and is written up about but in real life produces no real benefit.Agree to disagree, there are some truly atrocious engines out there right now that I doubt will outlast the rest of the vehicle
Block heaters assist in cranking and starting, but since all oils have a high MOFT when cold wear isn't an issue. Wear is more significant during warmup, and a block heater isn't going to warm the oil to a temperature that will affect this.A thicker oil might experience more friction heating generally, but it will have lower flow rates when cold since the oil pump will be in pressure relief. In any case, the difference between grades probably wouldn't be more than 1 or 2 degrees.
The best way to minimize engine wear during engine warm up is to use a block heater. Oil pan heaters are a lot less effective. Using a grill block in cold weather can help as well, but it makes a rather small difference during the early stages of warm up when most of the wear is occurring.
This makes sense to me. I need to separate oil temperature from overall engine temperature.I think I know the study you're referring to, and in that study, the increased wear was associated with low engine temperature in general (coolant, oil, and everything else), not specifically low oil temperature. The increased wear may be largely related to thermal expansion and tolerances.
No matter what oil or other treatment a poorly built or designed engine will be a poorly designed or built engine. I worked for 23 years at a forklift dealership and we maintained lots of pickups , vans sweepers etc and most of the peoples preconceived notions are just that. There is all the stuff that seems to make sense and is written up about but in real life produces no real benefit.
So a well cared for engine can die before the rest of the vehicle, which is contradictory to what was said earlier. That's what I was getting at.The same thing with oil filters yes a better filter is nice but engines well cared for will out last the the rest of the vehicle
On my car, the block heater will increase coolant temperature by 33 C and oil temperature by 20 C. The engine will spend less time at the coldest temperatures where wear is highest.Block heaters assist in cranking and starting, but since all oils have a high MOFT when cold wear isn't an issue. Wear is more significant during warmup, and a block heater isn't going to warm the oil to a temperature that will affect this.