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    Rheinol 5w40 Primus:

    Zero oil burned in 10,000 mile change....
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    Rheinol 5w40 Primus:

    10,000 mile OCI this time around....
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    Rheinol 5w40 Primus:

    Hey, @ChristianReske, Rheinol is a very good oil. Ive also used Liqui Moly and Total Quartz and was very pleased with them both. A friend buys two 55 gallon drums of Rheinol Primus 5w40 every month, so he refuses to charge me for Rheinol. Its hard to beat at that price!!!
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    Rheinol 5w40 Primus:

    Hey, FrankBee3, I think the tune is worth 3-5 mpg. The way the tune is written, is when vacuum is high and load is light, the mixture is leaned as much as possible and ignition timing is advanced up to about 50°-55° BTDC. Once you step down for power, the mixture richens progressively with...
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    Rheinol 5w40 Primus:

    Originally Posted by ChristianReske This Oil is even here in germany "exotic", because it is a small company. Comparable to "Eurolub". I am very surprised to see it here on BITOG. Nice to see it performed so well! Hello! We have been using it for many years at my friend's BMW/MBZ shop. Great...
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    Rheinol 5w40 Primus:

    Originally Posted by frankbee3 Question, is the .032" custom orfice the expansion valve of the air conditioning system? Is it larger than the stock orfice size? I am guessing that your tune gives you improved highway mileage when driven normally too? That is a very good looking car! I grew up...
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    0W-30 or 5W-30

    Originally Posted by Karma_Police Hi everyone, My quest to find the best replacement engine oil for my '16 BMW X1 has apparently ended me up in analysis paralysis. My thought process went on something like: "We have bad gasoline here so I should stick with LL-01 ones and stay away from those...
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    Rheinol 5w40 Primus:

    A few more pics of the beater... Even with the 4.30 axle, 5th gear is a .068 overdrive. Having tuning software allows me to tune the vehicle for very conservative settings at light throttle - for example, my cruise timing @2,250 rpm is 55° BTDC and fuel mixtures are leaned as much was...
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    Rheinol 5w40 Primus:

    Originally Posted by Cellist Great oil and a very clean and spotless engine! Is the car mostly driven on the highway? Mostly highway, but plenty of in town driving too. Its a daily driver. I have run a 160°F thermostat for over 10 years. I then program the fan strategy to keep the operating...
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    Rheinol 5w40 Primus:

    Today, just for fun, i changed the oil and threw Shell Rotella T4 15w40 in it with a new Motorcraft filter. I was instantly surprised by how much snoither and quieter the 4 6 3-valve was. Hmmmmmmmm
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    Rheinol 5w40 Primus:

    Originally Posted by Strjock81 I think Les Claypool produces it
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    Rheinol 5w40 Primus:

    Note this oil also has Lamborghini and Maserati approvals, plus BMW LL01, and Porsche A-40... Probably a decent oil, but i suspect it has lowered ZDDP levels to make it LSPI and catalyst friendly.
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    Rheinol 5w40 Primus:

    Originally Posted by Barkleymut Thats a beauty! Good to hear the 4.6's run so well on the higher viscosity. The mileage did suffer, but it is probably around .05% :P Most likely...
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    Current (New Formulation) VOA's For Rotella T4 15w40:

    It doesn't look bad on paper. Still has a decent, albeit lowered, ZDDP level..
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    Current (New Formulation) VOA's For Rotella T4 15w40:

    Originally Posted by Danno https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/5422975/pqia-hd-tests About 13 posts ago. Thank You, Sir!
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    Rheinol 5w40 Primus:

    You probably don't want to debate that topic. Dad was a NASCAR crew chief (and part of the 396 FE team that won Riverside in 1968) and we had a chassis dyno growing up, so we never followed norms. My wife bought a 2017 Honda fit. The first 5 oil changes were done by the dealer with 0w20. After...
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