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royal purple

  1. Royal Purple to Mobil1

    General E46 Forum
    Heu guys, I'm about to do my oil change on my 330i. The previous owner had serviced it with RP, I have Mobil1. Is there any need to do a engine flush before switching to Mobil1? Is there anything I should look out for before doing this? I used the search function before I made this topic...
  2. Dirty, sludgy, and grimy m54.

    General E46 Forum
    My e46 is about due to get an oil change so yesterday I went out and invested in 8quarts of Royal purple synthetic. After I drained all the oil out of the car, I opened the filler cap and I noticed all the nasty sludge on it and the cam cover. I had seen it before but I figured that before I put...
  3. 6spd Transmission Fluid

    ///M3 Forum
    Ok Fellow Fanatics... Can we get a poll started as to what Fluid works best for these trannys.. Redline / MTF-LT2 Royal Purple / Syncromax BMW OE / Castrol MTF-LT2
  4. Royal Purple FTL!!!!

    General E46 Forum
    I am always open to trying new products with an open mind and after hearing/reading so many good reviews i thought id give Royal Purple a try. So i bought royal purle oil (5W30) last week and my cars performance dropped!! :banghead: I never thought full synthetic oil could make such a negative...