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If the threads are the same (both M20?)....the L20073 is about an inch and a quarter longer. I used these on my Nissan Sentra SER SpecV with the 2.5L.

Wow, BITOG on Pennzoil literature. That is impressive! Does that make us lobbyist?

I ran the RP XPR 0w-10 just to experiment in my Sentra with the 2.5 litre. My engine didn't blow up and at 5000 miles Blackstone said report back at 10,000 miles. Otherwise it's kinda expensive. I've currently got Mobil 1 0w-20 Advanced Fuel Economy in my '07 Dodge Dakota 3.7 litre. Also...

Yeah, it was the XPR 0w-10. I ran it in the summer and into the fall. I posted the UOA here. It should still be here.

I had very good results with RP 0w-10 in my '02 Nissan Sentra SER SpecV.

Originally Posted By: CATERHAM Your welcome. I saw your UOA posting on this oil and others. I see you've modified your '02 Sentra; larger capacity sump etc. Did you install an oil temp gauge? Do you know what sort of oil temp's you generally see? What size and type of engine do you have...

Well now, that changes everything. I'm not surprised at my error. I was attempting to cross reference using the viscosity chart. Thanks a bunch for the numbers.

Originally Posted By: ekpolk Originally Posted By: Audi Junkie PP 0w-20 is amazing. And it "felt" very nice when I ran it in my Hybrid Camry. Alas, you pretty much have to special order the stuff to get your hands on any. . . ...and that's what I was doing. I'll be going back to PP 5w-20...

I'm still amazed by this, thus exposing my poor knowledge of oil properties. Royal Purple 0w-10 is designed for high temps, i.e., drag racing(doh!)... or summer driving. I'm back to PP 0w-20.

Originally Posted By: FrankN4 When you consider that the 0W-10 has a VI of 95 and the 0W-20 PP has a VI of 170, you can make sense of such a wide spread. How'd you come by the number 95 VI for RP 0w-10?

http://www.widman.biz/Seleccion/Viscosidad/Conversiones/Graph/graph.html I plugged the numbers in for my last oil fill, RP 0w-10, and it shows the RP to be a very thick oil at lower temps. Even thicker than the conventional oil I listed or even Mobil1 0w-40. the numbers really surpised me...

I bought 6 quarts on ebay for $85 with shipping.

I have a question. Why would the RP 0w-10 appear to be the thicker oil at lower temps? I crossed referenced the SUS viscosity from the BITOG viscosity chart and I think that would put the RP at about cST 48 at 40 degrees C. Did I do that right? The graph shows the RP as heavier than the YB...

Originally Posted By: BearZDefect Captain, anything modified on that engine related to lubrication? So, why doesn't Nissan recommend xw-20 these days like many others? The first three columns from the left are the same fill of RP. The virgin TBN was 12.1. Mods,...header, no cats, different...

It was very cold out when I changed this oil. I idled the car for a bit to warm up the oil. I'm guessing this is where the fuel came from. I ran this oil from April 08 to Feb. 09. The car now has Pennzoil Platinum 0w20 in it.

I've had very good results using Pennzoil Platinum 0w-20, 5w-20 in my QR25.

4631 for calcium in the Mobil 1?

Pennzoil Platinum 0w20 Pennzoil Platinum 5w20

Originally Posted By: JHZR2 There is no double standard, you pay, you link. Here in Illinois it's called, pay to play! Sorry, I couldn't resist. No harm meant.

Originally Posted By: jpr Originally Posted By: Bryanccfshr We used to have some software available that we could plug in the40°c and 100°c temps get a viscosity index and then calculate the oils viscosity curve through all temperatures. I have lost my link to it. As was mentioned a 5w30 can...