Originally Posted by gamefoo21
It's like my parents Hyundai, it's interesting because if you put the 5w20 into it the oil on the highway gets really hot, think the sensor on a summer day records 120-130'C. Put 0w40 into it and the oil temps are down below 110'C and in 5th at 110kph, it will pull. Compared to the 20 weight, where it has almost no pick up or pull.
I dont like wee-wee-oils, but there is the eternal question:
Runs the engine hotter or is the oil (oil sump) hotter with 5W-20? Or both?
Thinner oil flows faster. Can it absorb and transport more heat? I dont know...
That can be only verified with logs of coolant for peaks (diagnostic hardware). Or not? But I mean with the new generations of themostats, its as well not so easy (?)
Secondly: Is 130°C for 20 oil not out of reliability?? I have years years ago seen a study from VW about 5W-30 (504/507 was new in the time of this study), that ESP 5W-30 was safe (wear, oil film etc.), I mean, up to 125°C. 30. But 20 grade and 130°C? Huh...
Are Hyundais engine parts plasma coated?
It's like my parents Hyundai, it's interesting because if you put the 5w20 into it the oil on the highway gets really hot, think the sensor on a summer day records 120-130'C. Put 0w40 into it and the oil temps are down below 110'C and in 5th at 110kph, it will pull. Compared to the 20 weight, where it has almost no pick up or pull.
I dont like wee-wee-oils, but there is the eternal question:
Runs the engine hotter or is the oil (oil sump) hotter with 5W-20? Or both?
That can be only verified with logs of coolant for peaks (diagnostic hardware). Or not? But I mean with the new generations of themostats, its as well not so easy (?)
Secondly: Is 130°C for 20 oil not out of reliability?? I have years years ago seen a study from VW about 5W-30 (504/507 was new in the time of this study), that ESP 5W-30 was safe (wear, oil film etc.), I mean, up to 125°C. 30. But 20 grade and 130°C? Huh...
Are Hyundais engine parts plasma coated?
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