I guess to start I have a 2016 F150 with the 5.0. Purchased used in Nov 2017 with 48,XXX miles on it and just about to roll over 145K on it now. Day after purchase I put in a FS oil and a filter of my liking and have maintained it closely with plans to be kept long term (plan for both my boys to drive it through high school). Has been the best and my favorite truck I have owned so far with minimal issues.
Over the weekend I was changing the oil on my wife's car and decided to check the level on mine while hers was draining. Much to my surprise, the oil was just barely touching the dipstick and to get back to an appropriate level took 2 quarts. This is the first time a large volume of oil (to me at least) has been consumed/burnt by the truck. I have added roughly a .5 quart before to get back to the level I like, but never had the level that low before.
This is my third round of Valvoline EP 5W30 in the truck, I am just over 6K on this OCI and was planning on extending the OCI to around 9,500 to see how the UOA looked afterwards. The previous 2 rounds UOA's (pic attached) warranted the shot to go a little further, but I am curious now, should I abandon this OCI and send off a sample to Blackstone to see if anything is revealed?
Or stick with it and the "random" loss is credited more to what is discussed in this thread? Oil sheared, got thin, made it's way past seals, burnt off, and as the lower level of oil couldn't do as it did before, it kept burning off.
The only thing that has changed about the engine was right at the end of the last OCI I changed the PCV Valve as the one on the dirty side of the truck was still the original and very loose and gunked up. Discovered while cleaning my catch can. Maybe a possible contributor to the issue?
Thanks in advance for any help!
Over the weekend I was changing the oil on my wife's car and decided to check the level on mine while hers was draining. Much to my surprise, the oil was just barely touching the dipstick and to get back to an appropriate level took 2 quarts. This is the first time a large volume of oil (to me at least) has been consumed/burnt by the truck. I have added roughly a .5 quart before to get back to the level I like, but never had the level that low before.
This is my third round of Valvoline EP 5W30 in the truck, I am just over 6K on this OCI and was planning on extending the OCI to around 9,500 to see how the UOA looked afterwards. The previous 2 rounds UOA's (pic attached) warranted the shot to go a little further, but I am curious now, should I abandon this OCI and send off a sample to Blackstone to see if anything is revealed?
Or stick with it and the "random" loss is credited more to what is discussed in this thread? Oil sheared, got thin, made it's way past seals, burnt off, and as the lower level of oil couldn't do as it did before, it kept burning off.
What causes oil consumption to progress, further into the OCI?
Consumption is always the lowest for the first 2-3K, then sharply increases. So when vehicle manufacturers do a consumption test it is generally for the first 1000 miles. If consumption sharply increases after the first 2-3K, then the consumption tests are not accurate. 🧐 I have seen this...
bobistheoilguy.com
The only thing that has changed about the engine was right at the end of the last OCI I changed the PCV Valve as the one on the dirty side of the truck was still the original and very loose and gunked up. Discovered while cleaning my catch can. Maybe a possible contributor to the issue?
Thanks in advance for any help!