Originally Posted By: 4WD
Originally Posted By: buster
Originally Posted By: DuckRyder
Hi Buster.
The 4989 report was a 5/30 installed by a GM dealer. It was billed as “Dexos 1” it is probably AC Delco or Mobil Special I think.
Report here:
Mobil 1 5W/30 ??, 4989 Miles, 2005 Civic 1.7
The 8948 report was 5/30 M1 EP.
Report here:
Mobil 1 5W/30 EP, 8948 Miles, 2005 Civic 1.7
Next report on the AP is likely 15,000 miles and it will be over a year old. Question is If I change it then or keep going, which I have not decided.
Originally Posted By: parshisa
I think this oil shot. High TAN and started sludging up.
OP, aren’t you worried 0.75 had to be added as opposed to 0 during prior intervals?
Discussed extensively on the prior thread.
I’m not really worried about the make up because a good portion of it is due to sampling ALS bottles are actually a little larger than Blackstone. Finding out the exact measures is on my list of things to do.
Based on recent info … both M1 AP & EP in 0w20 had majority PAO and the same amounts … I’m buying EP for $25/jug and run to OLM around 7k … once out of warranty … will look at Tigs program at 10k on EP … no UOA needed …
EP 0w20 was about 70% PAO per MSDS, and AFE was around 30%. Base oil composition percentages are hard to really know. Both AFE/EP 0w20 are excellent oils.
AP is a more robust oil than both EP/AFE, but in what specific only XOM knows. Likely anti oxidants/oxidation resistance. They also clam unsurpassed wear control based in the SEQ IVA for the AP line, not the EP/AFE. That may not mean anything as a comparison though.
There have been so many varying opinons on TBN and TBN/TAN relation that I don't know what to think about TBN.