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Thread: Turning engine over several time after oil change before starting

  1. #1
    Jack Ethridge
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    Turning engine over several time after oil change before starting

    Is it necessary to ground the plugs and turn the engine over several times before starting after an oil change. The fellow that told me this said if you have an oil cooler you should open the the thermostate with a sp bolt befor turning it over. I have heard about draining the oil from the thermostat with an oil change. Is turning the engine over several time necessary?

    Jack
    Ocala Fl

  2. #2
    Administrator 20774's Avatar
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    Check out #11 on Snowbum's page:

    http://bmwmotorcycletech.info/Oil.htm

    If I understand it correctly, using the special bolt let's the oil slowly refill the cooler (since it's probably been drained) rather than possibly have the thermostat snap open resulting in a surge of oil into the cooler.

    As for turning the engine over in general, I've rarely done it but it does provide a warm-n-fuzzy to see the oil light go out while cranking the starter...this lets you know you didn't make any major mistakes in installing the filter and o-ring.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Registered User lkchris's Avatar
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    If you have the oil cooler you should use the special bolt.

    However, you'll be fine if you just start the motor with the bolt in place. It' really no different than waiting for a spin-on filter to fill.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  4. #4
    Jack Ethridge
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    Oil cooler

    I never drain the Oil Cooler when I change oil so it should not need to be filled with oil.

  5. #5
    Registered User Rinty's Avatar
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    Hey, there's 250 ml of dirty oil in there, Jack.
    Rinty

    "When you don't know where you're going, any road will get you there."

  6. #6
    Jack Ethridge
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    Rinty: 250 ml = 17/64th of a qt. Not enough for me to be conserned about

  7. #7
    Registered User Rinty's Avatar
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    Well, it keeps a few airhead owners awake at night.
    Rinty

    "When you don't know where you're going, any road will get you there."

  8. #8
    Registered User lkchris's Avatar
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    Quote Originally Posted by JETHRIDGE View Post
    Rinty: 250 ml = 17/64th of a qt. Not enough for me to be conserned about
    It's 10% of total capacity.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  9. #9
    Bluenoser
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    Quote Originally Posted by JETHRIDGE View Post
    Is it necessary to ground the plugs and turn the engine over several times before starting after an oil change. The fellow that told me this said if you have an oil cooler you should open the the thermostate with a sp bolt befor turning it over. I have heard about draining the oil from the thermostat with an oil change. Is turning the engine over several time necessary?

    Jack
    Ocala Fl
    No not necessary. Just make sure the dreaded O ring is installed properly ( if bike is so equiped ). If prior to changing the oil you have run or better still riden the bike to get it warmed up, put the bike on the sidestand for 5 minutes or so before you put the bike on the center stand. The angle the bike is stilling at will help the oil cooler drain down.

    If you don't believe me try this. Ride the bike, stop put it on the center stand - check the oil. Then ride the bike, stop, put it on the sidestand let it sit for 5 minutes or so, then put the bike on the center stand & check the oil. The oil level will be higher in the second case. On oilheads which had coolers this was the only way to accurately check the oil level.

    In my view there is no reason to actually drain an oil cooler ( unless you've had the engine blow up and you are doing a complete rebuild ).
    1971 R50/5 SWB with R75/6 drivetrain
    2013 DL650

  10. #10
    Polarbear Polarbear's Avatar
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    IF ya could kill it?

    The airhead engine is a marvel and not likely ever going to be killed by these oil cooler concerns. I find'em absolutely one of the most bombproof engines ever built by anybody, anywhere. I do however, always prime my spin on filters(other type engines), just finding it a sound idea. Matt Parkhouse just recently wrote about a guy or two draining their trannies, thinking it was engine oil drain plug!!! They filled the engine to 4 qts, with existing oil in their already. Wow. One guy rode his tranny, EMPTY of oil, to Pikes Peak and back, no damage. Another Wow. I don't know about the overfilled engine oil and its result, BUT. Come'on folks, the airhead outlives us ALL and will watch over our graves, still running. Randy

  11. #11
    Registered User
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    Quasi Oil Thread

    Oh, the humanity!

    Totally agree that the boxer engine is as tough as a nickel steak.

    My understanding is that NO oil reaches the moving parts until the filter cavity is full, THEN it goes to the engine.

    Snowbum recommends turning off the petcocks (of course) then popping the float bowls and draining. This is a good chance to get all those red paint chips out and any dead rodents that might still be in there.

    Crank until the scary light goes out. To me, this is easier than shorting the plugs. Plus, I love the smell of gasoline in the morning. . .

    Walking Eagle

  12. #12
    Registered User lkchris's Avatar
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    Quote Originally Posted by cycleman2 View Post
    The angle the bike is stilling at will help the oil cooler drain down.
    You're confusing Oilheads and Airheads.

    I always disconnected the oil cooler lines from the thermostat at every oil change, as it makes it about 1000% easier to refit the thermostat to the block without dislodging the o-ring or quad-ring when doing so. New crush washers, of course, and this for sure gets the cooler drained.

    But, if you don't do this, it DOES NOT excuse you from using the special bolt in the thermostat to assure complete cooler filling.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  13. #13
    Day Dreaming ... happy wanderer's Avatar
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    The Oil Cooler

    To drain or not to drain, that is the question? Call me crazy but if it was not recommended to drain the oil cooler and refill it according to the instructions why would the "special bolt" even exist?

    Isn't this sort of obvious? Maybe I am missing something but I drain it and refill it as per the manual whenever I change the oil. On the 82 RS with lowers it takes a fair bit of fiddling so I cuss and complain a bit while I do it but I do it nonetheless.
    MJM - BeeCeeBeemers Motorcycle Club Vancouver B.C.
    '81 R80G/S, '82 R100RS, '00 R1100RT

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