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Does the type of oil matter?

Discussion in 'Car Forum' started by pellertpale, Aug 26, 2005.

  1. pellertpale

    pellertpale ReMember

    258
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    Mar 10, 2003
    The Fort
    Not weight, but high mileage/synthetic etc. Is it ok to switch oil types?
     
  2. RMTactical

    RMTactical www.AR15pro.net CLM

    12,603
    16
    Oct 7, 2000
    Behind an AR-15
    It's ok to switch oil, esspecially in emergencies, any oil is better than none oil.

    I prefer synthetic, I believe it's better.

    I think for longevity, lighter oils tend to be better because you cause more wear and tear on an engine in the first 15 seconds (in a cold engine) than the next several hours.
     


  3. fnfalman

    fnfalman Chicks Dig It

    50,946
    3,482
    Oct 23, 2000
    California & New Mexico, US
    If I were to drive something like a Honda Civic or a Pontiac Sunfire, I probably wouldn't bother with synthetic. It's like feeding pearls to swines. Why bother?

    Most cars or trucks don't run hard enough to utilize even half of the protective potential of synthetic oil. If your Corvette gets raced on the track every weekend, then yes. If it's an occasional run through the twisties and maybe a track day or two a year, then no.

    The "premium" brands put synthetic oils in their cars because "premium" ("high performance") cars require premium oils.;Q

    That said, I'll stick with Castro SynTec for my Bimmer. It was in it originally. Otherwise, I'd feed it dino bones.
     
  4. walkin' trails

    walkin' trails

    1,100
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    Apr 24, 2005
    I'd like to see a good real world test of synthetic oils again. One of the Mustang specialty magazines did such a test back in approximately 1993. The test vehicle was a 5.0 Mustang, and the testing was all conducted at a drag strip. Back then, Mobile One synthetic actually showed an improvement in e.t. Since then, I've run it in several vehicles I've owned.
     
  5. RMTactical

    RMTactical www.AR15pro.net CLM

    12,603
    16
    Oct 7, 2000
    Behind an AR-15
    Oh, one other thing I forgot to mention.

    Changing your oil frequently and routinely is probably more important than the type of oil, as some dirt gets through the air filter and it's more important to have clean oil than dirty synthetic.

    I'd say between 3K-5K miles at least, with synthetic. Miles matter much more than time.

    The advantage synthetic has, is it takes longer for it to break down, and generally lubes better.

    You'll also get slightly better gas mileage with a lighter oil.
     
  6. epsylum

    epsylum Boolit Hoze

    3,868
    1
    Sep 4, 2004
    Racing Capital, USA
    VERY TRUE!

    Fresh oil is the key. Oil starts to break down and get acidic. That acid build up what will hurt your engine. Not to mention no filter can filter it out. Only changing the oil can fix it. My dad always told me to change the oil as much as you can (of course you can over do it). It doesn't hurt anything to change it more frequently and it's actually a bit better on your car.

    But I would stick with the bigger name brands in either petroleum or synthetic (but, always break an engine in on petroleum based).

    I mostly use Castrol because it's fairly cheap and well made stuff. Mobile 1 is very good, but of course you pay for all of it's "high performance" additives.

    I'm with FNFALMAN. I ran Costal (as in cheapest stuff autozone has)or whatever gas station brand I could find in the 92 ford escort I had. I really didn't give a damn about the car and it is soooooooooo far for "high performance" the engine wouldn't notice a difference.
     
  7. pnarq5

    pnarq5

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    Feb 11, 2005
    Ohio
    The best and the first syn. oil is Amsoil. A good filter is just as important as the oil. I use only Mobil-1 or Amsoil filter. I change my oil between 5-7k miles.
    When syn. oils were new, they would shrink seals and cause oil leaks. Since then, things have been added to prevent this. So, you can add syn. oil to any age car.
    Amsoil was put in a semi and run for 240K. A test was done on the oil and showed that it was still otay to use. They say it is good for 25k, but 5-7k is all I do.
     
  8. pellertpale

    pellertpale ReMember

    258
    0
    Mar 10, 2003
    The Fort
    I've used Casrtrol GTX, and just switched to the highmileage at 92K since it was only $.20 more for the 5qt. It's only a Grand Prix so I was never really interested in the synthetic, especially at $4 a qt.
     
  9. Rob1035

    Rob1035 Skeet Surfer

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    Jan 24, 2005
    Charlotte NC
    That's my motto...
     
  10. streeter69

    streeter69 This is Kewl

    450
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    Nov 25, 2001
    I like annoying people.
    All you can do is try and see. I switched my truck over at 120k and still have less leaks:) My 02 mustang, I switched over at 16.5k. My G/F sportage I switched over at 60k. I have no leaks in the later 2 and have less leaks in my old truck (but higher oil useage).

    One biggy I found is the quality of oil filter;P Do a web search and make your own choice:) I use amsoil, mobil1 or a/c delco.
    Synthetic oil (for the most part) is oil. I run my oil till 20k and change it. When I change oil filters my oil gets cleaner and clearer;f

    You can use dyno oil and still have good effects. The biggest thing is a DAMN good oil filter!
     
  11. RMTactical

    RMTactical www.AR15pro.net CLM

    12,603
    16
    Oct 7, 2000
    Behind an AR-15
    Not really. When oil gets acidic, your oil filter can do nothing to filter that out.

    Regular oil changes are much more important than the type of filter.
     
  12. streeter69

    streeter69 This is Kewl

    450
    0
    Nov 25, 2001
    I like annoying people.
    Somewhat true. I was driving 100 miles a day, it is proven you can change oil at longer intervals. I think you are stuck on the old way of thinking. I used to take car of a small fleet of vehicles (30) all switched over to synthetic when new. With all over 100k they get oil changes at 20k intervals with filter swaps at 10k.
    They run great.
     
  13. triggerjerk

    triggerjerk

    1,465
    55
    Dec 19, 2000
    Oh man, people have heart attacks over topics like this on the other car/oil boards. ;a

    Google for a guy with the screen name PATMAN.

    He does 6000-9000 mile intervals on german castrol 0W-30 in his C5. I think his last analyis which he posted showed NO engine wear from the previous analysis. . .
     
  14. streeter69

    streeter69 This is Kewl

    450
    0
    Nov 25, 2001
    I like annoying people.
  15. RoninP80

    RoninP80

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    Aug 4, 2005
    Yup, he's a hard core oil man. :)

    German Castrol has a very dedicated following (it's all I use in my C5 as well.... pre '05 green). Another stand out Synthetic (that's readily available) is Moble-1 Euro 0-40
     
  16. aaronrkelly

    aaronrkelly

    971
    43
    Feb 27, 2005
    For most people type or brand doesnt matter - most dealerships oil brand changes year to year depending on contracts and oil prices - Im sure they go with whats cheap.

    I use name brand oil (try to stay away from store brands unless its a real beater) and I always use factory oil filters. I buy KIA filters for my KIA and Mopar filters for my Dodge. Buying filters from the dealership costs about $1.25 more per filter. The KIA dealership recommended their filters because of the design, I bought one and went to OReillys. Sure enough, the KIA filter has a spring mechanism (bypass valve Im sure) that NONE of the aftermarket filters had. Thats the reason behind my madness. YMMV
     
  17. glockatlanta

    glockatlanta

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    Sep 27, 2003
    Atlanta
    Consumer Reports magazine did a report on auto engine oils a few years ago. I take Consumer Reports recommendations with a grain of salt, but this test was independant and at least semi-scientific--not just based on emotion or heresay. They tested "regular" oil and "synthetic" oil in a fleet of taxi cabs with rebuilt engines. Oil & filters were changed at regular intervals (5,000 or 7,500 miles--I forget). The engines were measured as they were rebuilt and again at the end of the test. The conclusion was that it didn't seem to matter whether "synthetic" or "regular" oil was used in terms of engine wear or "cleanliness", but that regular oil changes and using oil with the proper API rating was most important.
     
  18. Asha'man

    Asha'man eat the eat!

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    Jan 13, 2004
    Denver
    When the new motor goes into my car, I'll break it in with dino oil, but after that it's getting synthetic. I think it'll deal better with the high heat from the turbo and reduce wear and tear from day one on the brand new motor.

    Brian