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txab last won the day on September 15 2017

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About txab

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    Your worst fWONking nightmare
  • Birthday November 3

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  1. Motor Oil Before one can discuss the difference between a Semisynthetic, Full Synthetic and 100% Synthetics we need to know the blend stock that make these categories what they are. What you normally get in such a presentation are the API Group boundary specifications (You can Google those if interested) but this time we will look at the typical values for those Groups and some subsets as it will paint a much truer picture. Group 1: Mineral oil, solvent refined. 65 – 85% saturates, 15 – 35% aromatics Sulfur 300 – 3000 ppm VI 95 to 105. Possible viscosity range @ 212F = 4 – 32 cSt Group 2: Mineral oil, hydrocracked 93 – 99% saturates, 1 – 7% aromatics Sulfur 5 – 300 ppm VI 95 – 118. Possible viscosity range @ 212F = 4 – 30 cSt Group 2 Plus: Mineral oil. A more refined Group 2. Not technically a group but a type of Group 2. Saturates and Aromatic contents better than Group 2 Sulfur lower end of Group 2 VI 100 – 120. Group 3: Mineral oil, dewaxed, hydrocracked and hydro-treated and partially isomerized. 95 – 99% saturates, 1 – 5% aromatics Sulfur 0 – 30 ppm VI 123 - 150. Possible viscosity range @ 212F = 4 – 8 cSt. GTL: (a subset of Group 3) Mineral oil synthesized from Natural Gas Trace unsaturated. VI greater than 135. Sulfur less than .0002% or 0 - 2 ppm Cliff Notes version of GTL. Is natural gas that is converted to an ultra-sweet mineral crude that covers the range between light naphtha and lube oil. Highest percentage of isoparaffins. The most refined and cleanest of the mineral oil class but a mineral oil none the less. Once the synthetic crude in made it is processed like any other crude oil. So ends the mineral oil Groups. So what is the result of all this processing? As the process advances from Group 1 through Group 3 that C15 – C50 feed stock that came from the Atmospheric column or was synthesized becomes cleaner and more isoparaffinic. What does that do? 1.) Increases resistance to thermal and free radical oxidation. 2.) Lower cloud point 3.) Results in an increase of the VI. 4.) Possible viscosity range narrows Are there down sides? Sure, but blenders know what these are and compensate for the minuses during formulation. Moving on to the non-mineral products: Group 4: (aka PAO) Synthetic Polymer from natural gas and ethane conversion. Ethylene, C10 and C12 homo-polymers are intermediates not end products. Greater than 99% saturates, aromatic in the ppb range. Nil. Sulfur 0 ppm VI 125 – 150. Possible viscosity range @ 212F = 4 – 70 cSt Unlike mineral oils the carbon chain length is singular and as such has a boiling point that varies with viscosity instead of a boiling range like mineral oil. It can have natural unassisted pour point of – 49F. Group 5: Everything else; POE’s Diesters. (Includes materials not routinely used in motor oil) These are high VI synthetic single chain engineered ester polymers manufactured from plants oils/fats. If you need the whole nine yards pick up a copy of “Synthetics, Mineral Oils and Bio-based lubricants” by Leslie R Rudnick The materials in this book will explain the synergies that produce various beneficial results and the whys at the molecular level. As they are not mineral oils they haven’t any API touchstone requirements. They are never used alone. The finished product specs depend on the blender’s intentions and goals. Discussion of any API Group’s shortcomings as an individual component are therefore superfluous. Discussions of their strengths however are enlightening.
  2. This post/thread is for informational purposes only. I take no credit for info contained herein. Only passing it along for all to read and be possibly educated a bit.
  3. It's not a valve, it's just a fixed orifice.
  4. Tried using the Tapatalk app? That's what most members do.
  5. You will need a larger drive belt when upgrading
  6. Check for stored codes in the ECM. Usually remote start is disabled due to codes
  7. There are re-manufactured units for both v6 and v8. Also new, aftermarket units for both. iirc, the v6 model may have had two options for racks Your vehicle has an upper intermediate shaft that telescopes. You may have one that is stuck. I'd take it loose from the column and check it out
  8. Thread cleaned up at OPs request. Stick with OPs topic. No need to discuss someone's parking issues Went last night to Best Buy with the wife which was ridiculously slammed so with only a two week old truck I was going to park far away. There’s a theater next to it so I was parking right smack between the two but on the theater side because it wasn’t busy.... and looks like someone had the same thought AND almost the exact same truck! Only difference I saw was he has the 20’s on his and I have the 18’s and I have the off-road steps...
  9. txab

    Bye all

    Yep. He's on several sites
  10. Credits? Do you mean licenses ? Most any of the devices out there can be used on more than one vehicle, but you need a license for each vehicle. I own an Autocal. I've got two tuned vehicles by Black Bear Performance. I paid for the Autocal unit plus paid additional amount for a license for each vehicle. All from BBP. Again, I guess this is what you're talking about
  11. Are you talking about #3? If so, yes, it serves a purpose
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