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08-31-2021, 08:32 PM | #1 |
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Brake in oil question
I had the engine for my Blazer rebuilt and was broke in on a stand. I still have the brake-in oil engine and start it regularly. Should I drain it and add new oil or keep running because it's not road-ready.
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08-31-2021, 09:06 PM | #2 |
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Re: Brake in oil question
I would leave it in there...
If the rebuilt engine is a flat tappet cam, any replacement oil MUST contain a ZDDP oil additive, as modern oil do not have Zinc content due to it causing catalytic convertor failures. If the engine has a roller cam and lifters you would be fine with a modern oil... Have fun!
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08-31-2021, 11:38 PM | #3 |
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Re: Brake in oil question
Generally you'll run 500 miles before the first oil change. Unless you're running it for a long time each time you start it, it's going to take a while to equal as many running hours. Plus, putting a load on the engine helps break it in. I'm with Aussie; leave it in there until you get the engine in the truck and then make sure you use the proper oil when you do change it.
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09-01-2021, 11:33 AM | #4 |
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Re: Brake in oil question
Compared to a lot of other things, Oil is cheap!
I’ve always changed it after break in. Partly from piece of mind. Mostly to look for metal in the oil and filter. |
09-02-2021, 04:55 PM | #5 | |||
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Re: Brake in oil question
Quote:
Gary
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09-02-2021, 09:51 PM | #6 |
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Re: Brake in oil question
It was broke in with good grade oil and the motor is now in the blazer. I start it fairly regular and I move it around some, but it's not ready for the road yet.
new oil can't hurt too much. Thanks guys.
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10-09-2021, 04:47 PM | #7 |
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Re: Brake in oil question
Okay, guys. I drained the original break-in oil (mainly to see if I had metal stuff) and it showed to be really clean. My question If it was broken in with 30wt and because they sent me 20-50wt instead can I run it.
Did I mention it was in the Blazer. Thanks for any info.
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10-09-2021, 05:15 PM | #8 |
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Re: Brake in oil question
You live in cold country.
No need for heavy oil. I’d run 10w30. |
10-09-2021, 05:24 PM | #9 |
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Re: Brake in oil question
Thanks geezer. I'll have to send the Lucus 20-50 back and get the 30wt.
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10-10-2021, 05:57 AM | #10 |
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Re: Brake in oil question
10W30 is suitable for varying temperature ranges and also works well in cold weather. Not SAE 30 or 30W.
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10-12-2021, 11:14 PM | #11 |
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Re: Brake in oil question
Valvoline VR1, hands down a great oil in my book. 100k on my rebuilt engine with it. Flat tappet cam.
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10-14-2021, 11:15 AM | #12 | ||
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Re: Brake in oil question
I used to run straight SAE 30wt in all my rigs until about the mid 1990's. Now I run 10w30wt in all my rigs.
30wt for one is hard to find. It is also specified for break-in oil because it used to be a non-detergent oil. Not so much anymore. Don't run 30wt in your rig. Your lifters and bearings will thank you for using 10w30 in cold weather. Gary
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