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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?

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?

Is rated vehicle fuel tank capacity nominal (100% liquid volume as installed) or permissable (95% liquid volume)? Fueling method: High until first click, wait 20 seconds, Low until first click. Is this likely to result in overfill? Low Fuel Light Specification - 15% of rated capacity...

If you used Mobil 1 Advanced Synthetic as a baseline (100), how would you rate the expected life of their other products? Would this be close? Mobil Super = 60 Mobil Super Synthetic = 80 Mobil 1 Advanced Syn = 100 Mobil 1 ESP = 120 Mobil 1 EP = 150

2011 Sonata GLS 2.4 GDI 6AT My Aunt's Car just hit 250,000 mi First 100,000 mi (Dealer Service) 5000 mi OCI QS SynBlend 5W-30 Bulk & Hyundai Filter Last 150,000 mi (Her usual mechanic) 7500 mi OCI M1 5W30 & Hyundai Filter Trans Fluid changed at 100,000 and 200,000 mi. I thought Hyundai all...

I have a car that specs refill of 4.4 liters with filter. 4.732 liters is 5 qt. Would less than 1/3 liter overfill matter for most cars? Is the oil that close to the crank when running?

A friend recently inherited a Harley Evo. It came with engine oil which he is going to continue using for the engine (He thinks his dad was using engine oil in the engine, primary and trans). He has access to Mobil Delvac 1 Transmission Fluid 50 (MT-1 / GL-4) at work which is a 50 (Engine) or 90...

I've seen an oil change interval chart a couple of times. I have no idea of the source. Anyone have an original source on this? 3,000 to 4,000 mi - Frequent trips under 2 mi 4,000 to 6,000 mi - Urban driving 4,000 to 7,000 mi - Typical mixed driving 5,000 to 7,000 mi - Towing 7,000 to 12,000...

I think the Australian market might have been a little conservative about 20 years ago 1998 - 2002 Honda Accord J30A1 USDM -Export 5W-50 -40 to 0C 10W-50 -20C to 30C 25W-50 0C to 40C Conventional 6000 km maximum Synthetic 12000 km maximum The chart doesn't go there but I'm guessing you...

I keep seeing posts where people denigrate buying oil that meets a spec higher than the minimum standard in the owners manual. Has someone seen studies that give support to this position. To me it seems dubious that the higher standards for wear, deposits, corrosion and lubricant stability...

It was a data error. The manufacturer straightened it out. Mistakes happen.

I'm somewhat baffled by the purpose of some of the VOA/UOA often posted here. The fact that TBN is still focused on by many is a bit strange considering many major engine manufacturers now have no condemnation limit for TBN. Many oils that pass manufacturers test now finish with less than 1.0...

Do you have a movie that you particularly love that's never drawn big attention? For me it's "Finding Forrester" (2000) with Rob Brown and Sean Connery.

Sometimes it's the little things in life (inconsequential as they may be) that just make your day. Just had a couple of hotdogs for lunch. Woeber's Horseradish Mustard (Stoneground Mustard and Fresh Horseradish). It just makes a hotdog for me.

I have heard the Quaker State Ultimate Durability Synthetic was relabeled as the new Pennzoil Full Synthetic. So what is the current Quaker State Full Synthetic in the green jug with the gold label? Is it the same as the base Pennzoil Full Synthetic or is it the old Shell Synthetic or something...

The world has gone insane. Car Max 2010 Ford Ranger 45,000 miles No Haggle Price! $25,995.00

How does Mobil 1 Extended Performance work? It's starts out with similar TBN to standard M1 which is around 9.0. ACEA A3/B4 for an extended drain oil requires a minimum starting TBN of 10.0. Any insights into what makes this oil tick?

Mobil 1 HM is SP but it sill isn't GF-6A. Does anyone know if it's still >3.5 HTHS? 100C = 12 cSt 40C = 80 cSt

When a company discloses something like."It's 30-40% GIII" is that generally of the total product or just the base exclusive of additives and carrier oil?

I was looking at the PQiA test dated 10/06/2020 (may be outdated now) Vavoline Maxlife 10W-30 Moly 95 Boron 186 5W-30 Moly Boron 5 Kind of odd.