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5 quart jug of Super Tech: FOTSL (Fell off the shelf laughing).

Modern gasoline vehicles' cat converters aren't going to like the extra ZDDP, especially on engines known for burning oil as the miles add up. The only oil I have that can be in a diesel is Royal Purple HPS 10w-40. It has diesel certification ACEA E9-16, and I'm about to dump it in an LS1 in a...

I made that comment very late when I was about to sleep haha. I'd just go ahead and ignore that last sentence.

Well in that case, then it will all depend on the design of the engine and/or the oil filter. OP did have a point about how the oil pump doesn't behave like a cup pouring cold oil like in the videos on Youtube. That freezing honey oil might be flowing better than we think when it gets past the...

Don't think 1 cup of ATF is enough to lower the viscosity you intended to put in. I'd go ahead and keep driving it until your next OCI. At least you never put P/S fluid into the brake fluid res like I did a few years ago. Good thing I had a MityVac at hand to suck it all out, and that P/S fluid...

I drove from Tucson to Phoenix and back yesterday in a Grand Cherokee Hemi. I put 5w-20 Synthetic in (Royal Purple API). I mixed in a quart of 5w-30 HMX too, so it's a tad thicker. Oil temp the whole time was 215 degrees going 80 and getting a little crazy with the throttle a few times. This was...

Other than fuel economy and bearing clearances, I think engineers require thinner oils like 5w-20 because it dissipates heat better, as with any other thinner fluid. It flows a lot better onto all moving parts and recirculates faster to transfer heat to engine coolant, and also flows to the...

Did you check the oil after letting the engine get hot and sit overnight? That gives you the most accurate level. I noticed the oil level is halfway down the hash mark in my LS1 if I only let it run after a cold start for a few seconds and shut it off, even if it sits overnight. If the oil is...

Also Check lug nut torque... So I just found out Discount Tire went a bit crazy with the impact gun on our Jeep. Some nuts were torqued well above 150. Had to loosen all the lug nuts and grabbed my Snap-On torque wrench from work. Went over each wheel twice in a star pattern at 110 ft lbs as...

The industry as a whole is having problems making tires perfectly round. You'd think they got it down. I just put Nitto Terra-Grappler G2's on a 2013 Jeep Grand Cherokee. Had to balance them twice. The first time, I mounted and balanced them on my own since I work at a shop, and they vibrated...

6 qts 10w40 HPS, 6 qts 10w30 HMX, 5 qt jug 5w-30 HMX. The leftover quart of PP Euro L was the only individual quart bottle of PP at Walmart at the time. Only oil missing now is 7 qts of RP 5w-20 HPS, and another Wix filter for a Hemi. That one Mopar filter had the wrong threads if I remember...

My mom has a first gen 2002 Sienna with the 3.0 V6 that I put PUP 5w-30 in and ignored for a year. It went through a few quarts and ran low, and quite a bit leaked out from the rear valve cover gasket. Level was at the very tip of dipstick. It was also short tripped a lot. It's definitely not...

I've been using RP HMX for years, but a problem I see recently is their pricing of non-Synerlec API products in the modern era of quality, cheap synthetic oils for GDI engines and whatnot. Being on BITOG really does open the mind lol. The non-Synerlec oils should be no more than $25, if not...

Wix 51042 for LS engines. Aluminum or iron block based.

Modern version of the Rally Formula goes in the Lexus LFA.

I'd get 0w-30 or 5w-30 in that for Phoenix. Stick with the same brand you've been using.

Sticking to 1 brand is preference more than anything, and there are endless reasons why someone may buy an oil over another. From price, all the way to how smooth their engine sounds with it. 1 guy may hate a specific oil brand or blend, and then the other guy with the same exact car loves that...

Fram Ultra is top-of-the-line, so stick with that. If I was looking for well-priced API certified synthetic 10w-30, I'd either look for Pennzoil Platinum or Castrol Edge. You can't go wrong with either, so just buy what's cheaper. 10w-30 is better in warmer climates since it is harder to shear...

Let the engine get very hot and then let it sit overnight, then drain it cold. I noticed the oil level on the dipstick is most accurate after a hot Hemi has been sitting overnight. It reads higher on the dipstick than if you shut the engine off with cold oil and let it sit overnight, like as if...

The BITOG taboo special - Royal Purple. Across 4 vehicles. 5000-7500 miles (depending on vehicle) or 1 year, whatever is first. Only one of these vehicles get to 7500 at around a year, and everything else not even 5000 miles. HMX 10w30 in the LS1 Vette and 5w-30 both Toyotas, and API 5w-20 in...