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I'm SURE I've posted in a thread about this, but I canNOT find it.. So...I ordered a 2022 Porsche Turbo S E-Hybrid this January but 'transferred' that order in March when I bought a 2019 Cayenne Turbo.. What I transfered my dealer deposit to is a Porsche 718 Cayman GTS, but I don't yet have a...

I've been Searching for an hour and have found only this line in my PDF-type owners manual-- "Power Steering Reservoir - 3.6L Engine We recommend you use MOPAR® Hydraulic Fluid." The problem is I can't find a PS fluid with that exact name. I can find MOPAR fluids that are NOT spec'd for my...

It has only 42000 miles on it, but I like to do better maintenance than the minimum.. Finding the T-case model number took a while, but my goodbuddymechanic was persistent; it's an MP3023. Planning to use all Red line-recommended oils--75W85 GL-5 Gear Oil in the front and rear diffs, D6 ATF in...

Are the numbers truly indicative of thickness? For instance, an SAE-10W oil may have a viscosity of 5 while an SAE-40 oil could have a vis of 15 (from BITOG's viscosity chart at http://www.bobistheoilguy.com/visc.html ). Does that mean that X units of this SAE 40 oil will take 3 times as long to...

I'm again using M1 filters, this time a 209 on a Ford Edge V6, and now they're $11 at Autozone. Anyone have a source for a sigificantly lower price, say, for a case? I've Searched Google and here but found nothing.

Here's a little 'hair-splitting' for us*. Porsche seems to be in love with Mobil 1 engineoil. For the Cayenne V8s, P recommends 0W-40 for all temps and 5W-40 and 5W-50 for temps above -13dF. I live in Phoenix which gets REALLY hot in the summer; I've seen many days of 120dF.+ air temps above...

I've read several notes over the months that indicate that most oil-analysis labs will calculate a Total Base Number only for extra cost. I seem to remember in one case that extra cost was around the price of the basic analysis! I bought a 6-pack of analyses from OilGuard/MTM when I bought my...

I agree with Dr. T--it's a combination of base-oil viscosity AND quality and VI additives. Thicker base oils have higher H-T shear strength, LESS VI improver generates higher ratings, higher-quality base oil has higher HTHS, and I suppose there's some additive that improves HTHS. I believe the...

Most of this is easy; bare with me. The numbers denote the S(ociety of)A(utomotive)E(ngineers) viscosity (thickness) classes. Each class is defined as a range and the details can be seen here. This characteristic is NOT weight--all engine oils weigh virtually the same--but most of the industry...

I really hope the signal-to-noise ratio on this forum doesn't deteriorate due to this, but here goes. After lots of research here and elsewhere and preparing a spreadsheet comparing various candidates for my upcoming oilchange, I believe Red Line 5W-40 is the ONE oil for me if I have to choose...

I've stayed away from the diesel-rated oils ('bout all the 15W-40s and now some 5W-40s) because of the additional detergent/dispersant required for the diesel soot. Also, Red Line recommends against using their diesel-rated 15W-40 oil in gasoline engines "...since it could increase the tendency...

Test performed by MTM/OilGuard. 10,817 miles on engine, 8781 on oil. Was broken in (to about 2000 miles) with Mobil DD 5W-30. This batch was replaced with more M1 0W-40 before I switch to Red Line 5W-40 early this summer. "Wear metals, ppm: Alum 7 Chromium 2 Copper 0.15 Iron 10 Lead 9 Tin 0...

You guys frequently use terms like Group 4 to describe engine oils. I've searched this and API's sites for the definitions, to no avail. Could someone pls post a link to the API definitions?

...from myoilshop.com, for $7*/qt. plus $7.80 shipping per 12qt. case. (I'm old enough to have seen engineoil come in 24-quart cases.) Thx for the lead, buster. RL sent me a spec sheet in PDF format that contains all the RL street oils; e-mail me if you'd like it. JIC anyone cares, I've pretty...

Hmm...I'm spending WAY too much time here. Found you guys just the other day. I have an '04 Porsche Cayenne Turbo. It's equipped with the 4.5L twin-turbod V8. Porsche recommends M1 for all its cars and for the C-T, 0W-40 for ambient temps below -13dF/-24dC and 0W-40 or 5W-40 or 5W-50 for...