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  1. J

    How often to change fluids in granny car?

    So both my vehicles are awd, and both only see about 2000 miles per year each, with that being said going by the manual of either I would never reach the interval to change any of the fluids. Both Mobil 1 and Pennzoil I believe state that their products have a shelf life of about 4 years, they...
  2. J

    How often to change filter on granny car?

    Well both my cars only see about 2000 miles a year each. So I don't change my oil by a set amount of miles, I just change it every spring and always use synthetic (maybe I can go longer? Some say every 6 months, every year, some even say every 2 years) but anyway what about the oil filters...
  3. J

    Measuring Freeze temp with Robinair Refreactometer

    I recently bought a Robinair 75240 Coolant and Battery Refractometer. Water reads at 32 (so its calibrated) a brand new bottle of 50/50 coolant I have is reading at -34 as advertised, and an old bottle of coolant I had lying around read at -15. Now what I'm not understanding is in my 04 Jeep...
  4. J

    What fluid for 2007 BMW 328xi coupe transfercase?

    I just bought an 07 BMW 328xi coupe with 168k miles. I am going to service all the fluids as I think they're all over due even the "lifetime" fluids. The engine the dealer did (I'll change it again in the spring) Tranny I found out is by GM so I'm thinking of using MaxLife Dex/Merc which is...
  5. J

    Pennzoil Conventional (PYB) VS Pennzoil Platinum

    So I have been analyzing a lot of VOA's and many praise PYB as a top oil, I never thought a conventional could be so great until now what is even crazier is on paper it appears to be better/same than their synthetic Pennzoil Platinum?! A few google searches will find you the PP voa and the PYB i...
  6. J

    Cleaning Lifters: Rotella T6, MMO, Seafoam?

    I have an 04 Jeep Wrangler 4.0 with 120k. It has the infamous lifter chatter. My very first oil change 2 years ago (I put on only 3k a year so my OCI is typically once a year maybe twice) was done by someone else who used 10w40 (He said it was Mobil 1 synthetic but idk) and a fram orange can. It...
  7. J

    Motorcraft Transfercase Fluid... Just use ATF?

    My boss just got a 2008 Ford F450 Lariat 4x4. The manual calls for Motorcraft Transfercase Fluid.. Is this just a renamed overpriced bottle of atf at the stealership? Or do I really have to go to Ford and buy myself a couple of these quarts? I'll be changing the transmission fluid anyway so...
  8. J

    Can I add limited slip additive to a regular diff?

    So my boss just got a 2008 Ford F450 Lariat 4x4 and wants me to change all the fluids on it. So when it comes to differentials I know I can can use 75w140 in the rear and 75w90 in the front but I'm not sure if it is limited slip or not. He has another f450 the same year thats RWD i know is...
  9. J

    Remote Transmission Filter Kit?

    My dad has a 2008 GMC Acadia and this thing has a non-serviceable transmission filter, in fact it does not even have a pan! Just a drain plug. I try to keep the intervals short since its easy to change but with no filter that is only going to do so much. Anyway I came across this online and...
  10. J

    OCI by months? and M1 High Mileage or QS Defy?

    I have an 04 Wrangler with the classic inline 6. I have learned a ton from this website and I can say since I started changing my own oil I have seen an increase in its performance. My mechanic who changed the oil previously would put 10w40 assuming it was better, I am currently running QS Defy...
  11. J

    Differential fluid for Dana 30,35c, and 44?

    I got 2 jeeps as you can see in my sig. I want to change the differential fluid in them but not sure what to use. Manual recommends a couple of different things I'm thinking if using 80w90 in all of them? I also want to use some reusable gaskets ive seen as they have good reviews and i want to...
  12. J

    Jeep 4.0l i6 What oil should i use?

    Im new here to the forum, after reading the 101 write up and looking through all the posts i decided to sign up. Now I know its been asked a bunch of times and I've been searching this topic for days but I feel like the more I read the more confused I get lol. Im a noob when it comes to oil in...
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