Based on my driving, 8,500 recommendation. I’m sure it’d last fine, probably try 4,000 next. I mean, I have 12 gallons of it.What interval did the OLM recommend?
These 5.0's have a 7.7 qt sump. A TBN of 3.2 after 3,000 miles - how would this last the usual 7,500 - 10K?
What did the TBN start out as? Is TBN depletion linear, or does it accelerate/decelerate over time?What interval did the OLM recommend?
These 5.0's have a 7.7 qt sump. A TBN of 3.2 after 3,000 miles - how would this last the usual 7,500 - 10K?
QSFS is a "fancy-pants" oil? I've gotta applaud your sense of humor.When I deliberately ran my IOLM on my 3.7L F-150 down to low single digits (around 9k+ miles) and tested, the standard Quicklane oil and filter change, the oil was still OK—-barely. Good wear numbers but zero margin of error.
For fancy-pants oil like this and a good filter, I would feel confident doing that on a regular basis.
Weirdly low iron reading on such a new engine. Can’t complain I guess.
It certainly is. Check the approvals. As you would expect from a top-line oil from Shell, a $200 billion multinational integrated oil company.QSFS is a "fancy-pants" oil? I've gotta applaud your sense of humor.
Is this the oil?It certainly is. Check the approvals. As you would expect from a top-line oil from Shell, a $200 billion multinational integrated oil company.
That one has no approvals.Is this the oil?
Are these the approvals?
Quaker State® Full Synthetic Motor Oil | Quaker State
Quaker State® Full Synthetic motor oil is the best of the Quaker State family of products, formulated in 0w-20, 5w-20, 5w-30 and 10w-30 viscosities.www.quakerstate.com
The original post said that the oil was QSFS. Is this not QSFS? Was it another oil that was sampled?No, that one has no approvals.
It does lack a solid gold colored bottle, I admit.The original post said that the oil was QSFS. Is this not QSFS? Was it another oil that was sampled?
A TBN of 3.2 after 3,000 miles - how would this last the usual 7,500 - 10K?
Here is a VOA of QSFS 5W30:What did the TBN start out as? Is TBN depletion linear, or does it accelerate/decelerate over time?
This is exactly why I want to start low, then run the miles up each OCI. See how it holds out, but in a safe manner.Here is a VOA of QSFS 5W30:
From what I understand, TBN is not linear. I have seen some reports that imply that TBN usage does slow down as you get into an OCI, but the only way to know for sure is to test.