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Yeah I’ve got the MGC additive mixed in with the Syncroshift II. Not a fan that there’s not a lot of good info out there about what the stuff actually is but a lot of people seem to use it. The combo did clean up the shifting in my MT82. With the factory DCT fluid I’d occasionally get a...

https://bobistheoilguy.com/forums/threads/mega-75w-90-testing-thread.378175/ Take a look at the 75w-90 mega testing post. Amsoil severe gear pro: best shear stability con: oxidized quickly. HPL Diff life pro: best oxidation resistance con: some shearing The million dollar question, how much...

I’d like to introduce you to a little friend of mine called the free market. We produce a lot of oil and natural gas domestically, and yes we don’t import much from the Gulf but other people do. Gulf oil supply gets shut down, global demand for our oil goes up, our prices go up, oil companies...

Did you end up trying HPL? I’ve been using BG syncroshift II in my MT82 for the past few years and it works a lot better than the factory DCT fluid but I’ve been curious about HPL.

It has a similar zinc level as Valvoline VR1 even though they don’t advertise it along with a better winter viscosity making it a much better year round oil. If you’re comfortable running Valvoline VR1 20w-50 this would probably work just as well. The one thing I don’t know is if castrol...

This one seems pretty clickbaity, GM V8 and Toyota V6 engines are failing and due to manufacturing issues not becuase the oil was too thin or too dirty from long drain intervals. If that really was the case then nearly every engine on the road would be self destructing before 100k miles. Now...

50 weight is my goto track oil, and that’s why the 15w-50 originally went in. The planned track day fell though and it seemed silly to drain it so I ended up putting 4k miles on the car while the weather was still warm. Aside from the sump temp going up 5 degrees F and the warm idle oil pressure...

2019 Mustang GT 67.5k miles Out: Mobil 1 15w-50 w/ Fram Ultra Synthetic filter In: Mobil 1 Advanced Clean 0w-20 w/ CarQuest EP filter Finally got a day warm enough where I felt ok firing up the Mustang to get the summer oil out. I wasn’t planning on using Advanced Clean but with $30 back in...

You can pay however you like at the store, but it has to be in store with a receipt. The rebate comes to you through PayPal or Venmo.

It also works for most single quarts of Castrol Edge. Seems to work for everything but 10w-60. 5w-50 for $3.99 a quart plus the o’reilly cash is a great deal.

When he tested the different flavors of Mobil 1 Full Synthetic 0w40 sheared 10.6%, ESP x3 3%, C40 GT 3.9%, and Supercar 8%. FS and Supercar also went out of grade and ended up as a thick 30 weight. On the plus side FS had the best oxidation resistance out of the four. Another interesting thing...

We don’t know the experimental error for any of these tests. So call them all close enough to not mean anything and let’s just focus on the KRL test. How much real world use does it take to match that amount of shear? We also don’t know that and that and until you have some handle on how that...

And yet it had the lowest engine dyno wear metal rate, along with a low temperature during those dyno runs, a high peak engine torque, and a really low turbo deposit rating. If you have a turbocharged engine and want to push it hard, get high performance, and change your oil frequently, all of...

I liked this set of tests. One thing that stood out was how brutal the KRL test really is, all of these oils showed minimal shearing after two hours on the dyno. That taps into a question I’ve had for a while, how much real world use (daily driving or even HPDE track hours) would it take to...

You can run 50 weight oil all you want, heck if you look at the specs for Motorcraft 5w-50 the it’s almost a 60 weight oil. Downside if you’re not track driving is lower mpg. If you’re just daily driving these engines can run 20 weight oil without a problem. I had 8 quarts of total ineo mc3...

I’ve posted analysis results here totaling around 50k miles using various group 3 5w-20 oils, driving year round through freezing single digit winter days to 90+ summer days with no signs of any serious wear. That’s also while running extended internals which is another kettle of worms. My most...

Unless your oil temp gauge starts reading hot there’s no need to run 5w-50. You certainly can but lighter weight oils are perfectly capable of protecting your coyote, at least that’s what I’ve observed with my 2019 Mustang and I’ve done multiple 10k mile runs with 5w-20. If you’re changing the...

Yeah there’s a lot of 20 and 30 weight oils that aren’t nearly as far apart in cSt @ 100C as you’d think but yet people will passionately say that 20 weight oil is an EPA / car manufacturer plot to destroy your engine but this 30 weight oil that’s a whole cSt thicker will keep it running for a...

I’ve been using a lot of Fram Ultra Synthetics in family/friend cars I change the oil for. Mustang gets a pretty steady diet of Purolator Boss.

That gets into the question of how much real world track or daily driving use the KRL test equals. Something I’ve been curious about and it’s probably going to be very engine dependent but it would be neat to see someone try and make that comparison.