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I would have asked them to rerun the viscosity and the flashpoint. I have my suspicions one of them is off. That's very low for an oil that likely started close to 11.0 cSt. If you still have some oil from that lot number a VOA might be interesting. I have gotten 5W-30 in 5W-20 bottles before...

1965 F250 V8 10 mpg x 5 qt x 50 = 2,500 mi 2015 F250 Gas 15 mpg x 7 qt x 50 = 5,250 mi So which one does this hypothetical milage statement apply to?

Double Post

3.700 Bore x 3.75 Stroke 320 cfm @ 0.500 Lift (28") 8600 rpm limiter (Full Race Tune) 8100 rpm limiter (Conservative Tune)

We have a 323 ci version of that engine that ran 10s at the strip normally aspirated on a road race suspension with a T56 trans. 20 Grade - Max 239F 30 Grade - Max 248F 40 Grade - Max 266F 50 Grade - Max 284F That was the FRPP recommendations as I recall. I'm to old for midsummer heat these...

If I remember correctly... 284F Max Oil Temp = 50 Grade 266F Max Oil Tenp = 40 Grade 248F Max Oil Temp = 30 Grade 239F Max Oil Temp = 20 Grade We exceeded that without instant destruction but likely at the expense of increased wear rates.

Looking at VOA and noticed ACD D1G3 / Honda Syn / MC 0W-20 seem to have an extremely similar additive package. Is AC Delco still using Exxon-Mobil or did they switch to Conoco-Phillips?

In other words a car my Mother would LOVE!!!

Car is a technically a Repo, but not the normal Repo. It's a Floorplan Repo where the Dealership went under. New Dealership oil change sticker "5W-30 Synthetic" so no help there. First Owner 3 years and 6,500 mi total - Annual Changes at VW Dealer with less than 1500 mi the last year. My gut...

I hadn't seen the other post. I was just trying to figure out if it was the total number or the apparent acceleration in rate that was the primary reason. Sounds like all the factors. Would you lower the condemnation rate to 25 MPC Oxid in the future or are you comfortable with 27 MPC...

6-Speed Auto To late to edit.

If this is accurate your oil age miles are off on 5 entries by 1500 miles. January 1, 2024 at 33,300 (or 31,800 corrected) oil age mi... Was it drained because of 27.1 MPC Oxid or the accelerated rise in Visc and Oxid in 5300 mi despite 0.75 qt of add oil?

The TBI 5.7L in the Square Body at the end was very solid. Unfortunately without updates the 700R4 wasn't.

Pre-02 sensor many a carb engine ran leaner than EFI with 02. The 02 was a narrow band until recently so you had to stay around stoich.

2017 VW Jetta S 1.4T 8A. 56,000 mi - 2 Owner Condition - Paint and interior very good. Dent on right front fender. Paint intact. Maintenance First 37,000 mi - 8 oil changes Valvoline Synthetic 5W-30 (Type ???) Last 19,000 mi - No history Price: $8,500 Thoughts on potential purchase?

I only saw one drain on the table. January 1, 2023.

20 is what I used when I was doing 30,000+ mi OCI with heavy diesels on conventional back in the 90s. Went a million miles on some of them. Headgaskets going before a million miles was usually the limiting factor. Only made sense to overhaul then, but some of the pistons and liners really looked...

Was it drained because it exceeded 27 MPC Oxid or the rapid rise in Visc and Oxid in 5300 mi despite 0.75 qt of add oil?

Your welcome.😉

Where we live we only have one pipeline. The gasoline is all the same. The additive package and the ethanol is added at the "rack".