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DIY Oil Change


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42 replies to this topic

#41 OFFLINE   fbov

fbov

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Posted 11 June 2017 - 10:11 PM

I'm trying to warm the oil, not the engine. I want the oil at operating temp for an extended period. I'll let the car cool down before changing the oil, though. 

 

Run mode is one major possibility, as is month oil is changed. However, those two factors are aliased in my data. The only winter oil change was also the only time I drove mostly highway. However, the three summer changes show the full range of variation in fuel percentage and flash point, from 0.5%/400F to 3.0%/325F. 

 

The data points to oil... 5W20 gave the 0.5% point while 0W20 averages 2.7% fuel in the oil. However, I'm about to change my third fill of 0W20 oil, right after a 300 mile trip. so we'll see... If fuel content is still high, the lighter weight oil is implicated independent of run mode. I'll be putting in a 5W20, likely Mobil 1 EP.

 

But I've retired, so miles are down and trips are shorter still, and that's a different driving mode altogether! Results from here will be slow to come, and not as consistent. Cie la vie!

 

HAve fun,

Frank 


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#42 OFFLINE   obob

obob

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Posted 11 June 2017 - 10:58 PM

I'm trying to warm the oil, not the engine. I want the oil at operating temp for an extended period. I'll let the car cool down before changing the oil, though. 

 

Run mode is one major possibility, as is month oil is changed. However, those two factors are aliased in my data. The only winter oil change was also the only time I drove mostly highway. However, the three summer changes show the full range of variation in fuel percentage and flash point, from 0.5%/400F to 3.0%/325F. 

 

The data points to oil... 5W20 gave the 0.5% point while 0W20 averages 2.7% fuel in the oil. However, I'm about to change my third fill of 0W20 oil, right after a 300 mile trip. so we'll see... If fuel content is still high, the lighter weight oil is implicated independent of run mode. I'll be putting in a 5W20, likely Mobil 1 EP.

 

But I've retired, so miles are down and trips are shorter still, and that's a different driving mode altogether! Results from here will be slow to come, and not as consistent. Cie la vie!

 

HAve fun,

Frank 

 

 

OK, so you warm the oil up because you want the dirt to be suspend in the oil. That sounds like a good idea.  If that is incorrect please clarify.

 

By the way, I just bought 5w20 oil, Mobil 1, not EP.



#43 OFFLINE   fbov

fbov

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Posted 16 June 2017 - 08:27 PM

Rather than explain again, I'll wait until I get data from this change. 

 

I'll look at the flash-point and fuel content. You'll want to look at the insoluble percentage, a few tenths of a percent historically, but 0 last time. 

 

Have fun,

Frank


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