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Break-in oil

Discussion in 'Tech Discussion' started by Jt1776, Dec 8, 2019.

  1. Jt1776

    Jt1776 Junior Member

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    I'm getting ready to prime my oil pump today. What oil should I use, and how should I break in this sbc 350. I hear hard is the way to go, then some say easy. I'm more for the easy but this is my first rebuild. So I want to do this right. Thanks
     
  2. Snoots

    Snoots Supporting Member Supporting Member

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    I used 10w-30, started and ran the motor at 3000 rpm's for 30 minutes. Then changed the oil and filter and refilled it with 10w-30.

    No problems. Great oil pressure.

    Just my 2 cents.
     
  3. Craig 85

    Craig 85 Full Access Member

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    I used Lucas Break in oil for my truck. I then run their zinc additive with my regular oil.

    [​IMG]
     
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  4. Jt1776

    Jt1776 Junior Member

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    Can I use just the Lucas breakin additive with conventional oil. Just because I already bought the oil with a bottle of Lucas breakin additive, but I can return it. Thanks for the advice
     
  5. 86454k30

    86454k30 Junior Member

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    I use the Lucas break in oil as well.
     
  6. Shorty81

    Shorty81 Baby Boomer

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    I use Shaeffer Supreme 7000 15w/40 for break in and beyond. Full synthetic, high Zinc for flat tappet engines. I ran my engine 2200 rpms for 20 minutes for cam break in. Dang good oil, not cheap though.
     
  7. Matt69olds

    Matt69olds Full Access Member

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    Use some kind of break-in additive, especially if it’s a flat tapper cam. Once the 30-45 minute cam breakin is over, drain the oil, and refill. I drive my new engines easy long enough to make sure nuts stay on bolts, and verify proper oil pressure and engine temp, then drive it normally. Don’t baby it, but don’t beat on it either. The engine needs to see a load to properly seat the rings.
     
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  8. shiftpro

    shiftpro Full Access Member

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    Rotella 15-40 T-4... with ZINC! For everything flat tappet, break-in and beyond. Buy the 20 gal bucket at WMart for the best price. New cam, old cam
    pour it in. If you have a new cam add a few oz's of molly/zinc engine break in juice.
     
  9. wixthedog

    wixthedog Junior Member

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    Your cam instructions should give you some advice here but what the others said is good. Run it for 20 minutes between 2000-3000 rpm and do not let it idle. If you have to shut it down for whatever reason just kill the ignition where it is rather than bringing it down. I use Edelbrock break in oil but there are plenty of other options. The additive you have is for after initial break in is complete.
     
  10. Jt1776

    Jt1776 Junior Member

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    Thanks everyone for your advice. I bought some Lucas breakin oil from amazon for $30. I'm waiting for it to get delivered
     
  11. peats

    peats Full Access Member

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    i'm with shift pro, rotella 15-40 with break in lube. 2,000rpm or so for 20-30 min. i usually drive 'em a few miles before dumping the oil. if its a flat tappet cam, you will need to use an additive with the rotella. i use lucas but they all do the same thing
     
  12. QBuff02

    QBuff02 I like Big Blocks and I cannot lie

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    Always use Brad Penn break in oil on new engines. Have had very good luck with it.
     
  13. 1973c10

    1973c10 Full Access Member

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    I used Delo 15W-40 or Rotella 15-40 with some Lucas break in oil additive with good luck
     
  14. chappy78

    chappy78 Supporting Member Supporting Member

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    Here are the break in instructions that came with my Chevrolet Performance crate engine:

    Start-up and Break-in Procedures:
    1. After installing the engine, ensure the crankcase has been filled with 5W30 or 10w30 NON-Synthetic motor oil to the recommended oil fill level on the dipstick. Also check and fill as required any other necessary fluids such as coolant, power steering fluid, etc.

    2. The engine should be primed with oil prior to starting. Please use an engine oil priming tool. Newer V8 and V6 engines will require the usage of a pressurized oil tank specifically designed for oil priming. For older Chevrolet V8 engines you can prime the engine in this method: To prime the engine, first remove the distributor (if it is already installed) to allow access to the oil pump drive shaft. Note the position of the distributor before removal. Install the oil priming tool. Using a 1/2" dill motor, rotate the engine oil priming tool clockwise for three minutes. While you are priming the engine, have someone else rotate the crankshaft clockwise to supply oil throughout the engine and to all the bearing surfaces before the engine is initially started. This is the sure way to get oil to the bearings before you start the engine for the first time. Also, prime the engine if it sits for extended periods of time. Reinstall the distributor in the same orientation as it was removed. After the engine has been installed in the vehicle, recheck the oil level and add oil as required. It is also good practice to always recheck the ignition timing after removal and reinstallation of the distributor. See step 4 or engine specifications for the proper timing information.

    3. Safety first. If the vehicle is on the ground, be sure the emergency brake is set, the wheels are chocked and the car cannot fall into gear. Verify everything is installed properly and nothing was missed.

    4. Set initial spark timing as required in the Owner’s Manual or GM Service Guide. Rotate the distributor counterclockwise to advance the timing. Rotate the distributor clockwise to retard the timing.

    5. You should always allow the engine to warm up to 180°F prior to driving. It is always a good practice to allow the oil sump and water temperature to reach 180°F before towing heavy loads or performing hard acceleration runs after your engine has gone thru the break-in period.

    6. Once the engine is warm, verify that you have the correct Total Timing.

    7. The engine should be driven at varying loads and conditions for the first 30 miles and a minimum of one hour without any wide open throttle (WOT) or sustained high RPM accelerations.

    8. After completing the initial drive time. Run five or six medium throttle (50%) accelerations to about 3000 RPM and back to idle (0% throttle) in gear.

    9. Run two or three hard throttle (WOT 100%) accelerations to about 3000 RPM and back to idle (0% throttle) in gear.

    10. Change the oil and filter and inspect the oil and the oil filter for any foreign particles to ensure that the engine is functioning properly. Replace the oil with NON-Synthetic motor oil with the correct viscosity weight as specified in the Owner’s Manual or as specified for the engine. Use the correct AC Delco oil filter.

    11. Drive the next 500 miles under normal conditions or 12 to 15 engine hours. Do not run the engine at its maximum rated engine speed. Also, do not expose the engine to extended periods of high load.

    12. Change the oil and filter. Again, inspect the oil and oil filter for any foreign particles to ensure that the engine is functioning properly.

    13. Do not use synthetic oil for break-in. It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation. In colder regions, a lower viscosity oil may be required for better flow characteristics.
     
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  15. Snoots

    Snoots Supporting Member Supporting Member

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    Gotcha . . .

    Larry_Chen_2017_Speedhunters_NHRA_101_01-1200x800.jpg
     

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