[Malsua]

Originally Posted by tuccillo

Most likely a classic example of not understanding statistics.

Go on NASOIC and ask them. The math, the analysis and the stats show otherwise.

Mobil one 5w-30 shears too quickly. The particular Subi engines(ej20) with an issue have a poorly lubricated main at #4 and it's slightly a different size which changes the angular velocity. Once the mobil 1 shears down a bit, it galls, heats, seizes and spins.

The problem is generally solved in one of two ways. Run higher oil pressure or don't use Mobil 1 5w-30.

[OhioBuckeye]

I agree Bob14563,, but it’s just a matter of choice, but if you start with an oil stay with it, personally I like Blended Synthetic oils. I use to always use Quaker State some liked it & some didn’t. Havoline they used to say it was the worst oil because it had a paraffin base, don’t know because I never used it we used to have some old retired race car drivers come to where I work & they swore that Wolves Head was the best, but that brand is no longer sold! Out of the 4 you mentioned I like Mobile 1, but again some liked it & some didn’t. Just change your oil like your car manufacturer tells you.

[tuccillo]

Please provide a link to the specific data you are referring to.

Originally Posted by Malsua

Go on NASOIC and ask them. The math, the analysis and the stats show otherwise.

Mobil one 5w-30 shears too quickly. The particular Subi engines(ej20) with an issue have a poorly lubricated main at #4 and it's slightly a different size which changes the angular velocity. Once the mobil 1 shears down a bit, it galls, heats, seizes and spins.

The problem is generally solved in one of two ways. Run higher oil pressure or don't use Mobil 1 5w-30.

[Joe C.]

You'll get a million opinions on oil. So here's mine. SHELL ROTELLA T. It's full synthetic.
I used it in my 2002 Honda GoldWing (engine is a boxer 6 cylinder). I rode it in all types of weather all over this country and had around 83,000 miles on it when I sold it in 2015.
Never had an engine problem in all that time, and it ran smoother than silk and as strong as could be. Also, the Shell Rotella T is really inexpensive compared to other oils.

[edtherock]

I think in todays vehicles, and I think we can find many experiences that car engines and oils are so well made today any oil that meets the manufacturers specs work perfectly well. The engines rarely fail first any longer. It is transmissions and all the electronics that fail first. I believe all standard gas engine cars will last 200k miles with just regular oil changes and maintenance. The key is to keep things clean. Oil, filters, air filters, vacuum out filter boxes etc. I have had a few cars now with over 200k miles each. Toyota and Hyundai

[CoachKandSportsguy]

Originally Posted by ithos

What is the best brand of motor oil and what type? Do the benefits warrant the higher costs.

unless you do high mileage annually, which means that you change your oil every 5,000 miles more than 4-5 times a year, any of the API-SP service level oils will work at the recommended viscosity by the car manufacturer.

API | Oil Categories

SP Introduced in May 2020, designed to provide protection against low-speed pre-ignition (LSPI), timing chain wear protection, improved high temperature deposit protection for pistons and turbochargers, and more stringent sludge and varnish control. API SP with Resource Conserving matches ILSAC GF-6A by combining API SP performance with improved fuel economy, emission control system protection and protection of engines operating on ethanol-containing fuels up to E85.

[Buckeye Bill]

Wtf d pov sd4 and why cant people spell the words

[Sgt Ed]

AS far as oil goes there are many many good ones out there. The very best thing you can do is to stick to one brand you like and never ever mix it with something else. In todays oils there is NO NEED to add anything extra. One person stated that HAVOLINE was the worst. I've got news for him, 1 it is not a paraffene base stock,{that is all Pennsy oils like Quaker State}. In the conventual oil world, HAVOLINE is one of the very best. A quick word about Pennsy oils, they are VERY good lubricants but the paraffene stocks were highly resistant to cleaners and as a result they sludge up real bad. Dig thru the sludge you will find no wear unless the sludge plugged up the oil gallies or holes.
Todays synthetics are superior to most convential oils. Mercedes and Porsche both recommend Mobile 1. Ferrari recommends Penzoil. Surprise Lexus recommends their own oil which is a conventual oil 0 weight-20 weight. Untill recently no synthetics went to 0 weight.One observation I myself have foundis one Oil says it has liquid moly in it. Moly {molibiumdisulfide} looks like grafite,black. We used to have to mix up the stuff to use on F-4 jet aircraft. Nasty looking stuff, anyhow the mentioned oil is as clest as water, so think about it. In mu Posrche I use Mobile 1 for the warranty and mu Lexus and Volvo use Castrol synthetic . Happy motoring.

[mrf0151]

Originally Posted by edtherock

I think in todays vehicles, and I think we can find many experiences that car engines and oils are so well made today any oil that meets the manufacturers specs work perfectly well. The engines rarely fail first any longer. It is transmissions and all the electronics that fail first. I believe all standard gas engine cars will last 200k miles with just regular oil changes and maintenance. The key is to keep things clean. Oil, filters, air filters, vacuum out filter boxes etc. I have had a few cars now with over 200k miles each. Toyota and Hyundai

Excellent true and common-sense points made here.

[mrf0151]

Originally Posted by Toymeister

"Bob is the oil guy" is a forum that discusses this topic extensively. Often with lab results. There you will get far more intelligent observations, vice simple opinions, based on facts than you will here.

Bob is the oil guy

Good information for probably less than 1% of the audience here. Thanks anyway!