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https://360.lubrizol.com/2021/ACEA-2021-The-Additional-TBN-Test-Requirement-for-Fresh-Oils

https://pqia.org/2020/12/09/irvin-warren-tribute/ http://www.skinnerandsmith.com/obituaries/William--Irvin--Warren?obId=19171086

I have been visiting this topic in my head for many years. If I could run an engine in a hypothetical lab condition eliminating outside influences such as road conditions, terrain, humidity, temperature, wind, drag, etc. With these parameters set, I record fuel economy over a range of engine...

All our local BP stations are converting to Circle K. What's up with that?

Sent an email to Warren this morning and got a reply by noon. Enjoy!

Some info I've gathered the past month. Upfront, SuperTech (Warren) synthetic has better spec's than Mobil1. Enjoy! Pre 2001 Specs Post 2001 Specs @100C @100C w90 13.5-24 w90 13.5-18.5 w140 32.5-42 w140 24.4-32.5 SupertTech Syn @100C @40C VI w90 16.15 109.3 159 w140 27.64 171.8 200 Conv...

I was curious about their oils for LS rear ends so I emailed Warren Distribution and this is what they said. I sent the email on late Friday and received a response by the end of day Monday. Very good response time and very good company. This applies to syn and conv. "Gary, You asked about...

What do think of this... (link removed - language)

I hope this is the right thread. On a 1993 F150 I'm reading an EEC-IV code (334-EVR voltage High). I can trubleshoot that and it's not my question. I purchased a code reader a few years ago because I was tired of frantically county the CEL flashes and writing them down. Good purchase since I'm...

Would you be willing to give up the protection of A3 for the fuel economy benefits of A5? Or the other way around? Or is it a wash?

Did the specs change for 75w-90? If so when? My Ford trucks are spec'd for 75w-90 but, I think, Ford now uses 75w-140. I cannot find a TSB that points to the change and that would be helpful. When I bought the Ranger it came with 75w-90. A year later when they rebuilt the rear axle they put in...

Ok, so I couldn't sleep last night so I ended up here. Or was it a bad dream? I went to the Mobil US and EU sites to the oil recommended area and looked up my vehicle. At the US site it recommended 5w-30 API SN. At the EU site (I picked United Kingdom) it recommended 5w-40 ACEA A3/B3 A3/B4...

For my friends that understand ACEA better than me... In my 2005 Ranger (85k miles) I use A5/B5 oil. Would you switch to an A3/B3? And why? In my 2000 4Runner (250k miles) I use A3/B3 oil. Would you switch to an A5/B5? And why? I know B3 is outdated but it's what Mobil1 HM lists and mine are...

For my friends that understand ACEA better than me... In my 2005 Ranger (85k miles) I use A5/B5 oil. Would you switch to an A3/B3? And why? In my 2000 4Runner (250k miles) I use A3/B3 oil. Would you switch to an A5/B5? And why? I know B3 is outdated but it's what Mobil1 HM lists. This is NOT...

I came across this article while I was lurking in my "Lubricants" folder. Appoligies if this has been previousely posted. What I was really reading about was the relationship with pistons, liners and rings with lubrication and friction. It was interesting to note that at mid-stroke the rings...