Used this oil for breaking in my 5.3 build. I wouldn’t use anything else. Especially for such a critical procedure.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great break in oil
By 
ANTONIO, 
a 
Verified Buyer 
on 
May 02, 2022
Has added zinc which is great. Good for fully breaking in small engines also. I like that it's red in color so you can check it to make it's not getting too dark.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best break in oil
By 
RUSSELL, 
a 
Verified Buyer 
from 
Detroit  
on 
April 28, 2022
I ran my engine with the amsoil break in oil and my motor is breaking in very well... I had to remove my motor to swap parts to put in a different vehicle and everything is breaking in perfectly.
Bottom Line
Yes, I would recommend this to a friend.
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4 star rating
Race car break-in oil
By 
BEN, 
a 
Verified Buyer 
from 
Harrison twp Michigan  
on 
April 13, 2022
I have reviewed the specifications of several oils for my new Pontiac 455 GTO drag engine (1967 GTO) I have decided on Amsoil for break-in.
The engine is a non-roller 12.5 compression unit with a high lift cam so proper break-in is critical.
Bottom Line
Yes, I would recommend this to a friend.
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4 star rating
1979 Honda CB750F
By 
JOSEPH, 
a 
Verified Buyer 
from 
Long Island  
on 
April 12, 2022
I used amsoil sae30 break in oil while restoring my vintage motorcycle I bought back in college. It’s working great!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great for new builds
By 
SEMIR, 
a 
Verified Buyer 
from 
Hamilton ontario 
on 
April 08, 2022
Great product for breaking in you new build I recommend to anyone with a rebuild
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Good value
By 
RONALD, 
a 
Verified Buyer 
on 
March 24, 2022
Good value, quick ship
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
break in oil
By 
Valeri, 
a 
Verified Buyer 
from 
St Andre LeBlanc 
on 
March 16, 2022
I understand that the break in period of a new engine is critical for the life of the engine so that is why I trusted this oil for my new sawmill engine.
I have used this in many engine. I used it to break in a 26hp kholer engine and ever since the oil stays very clean after many hard hours of work signifying that the rings are well sealed. Also I build race engines and use this to break them in. We had one motor that had to be torn down 4 times and I reused the rod and crank bearings all 4 times because they were perfect. So I got to see the bearings after about 6 different nights of racing in them and the oil pressure is excellent still. We get great ring sealing with this oil and I will always sell my motors with this oil.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Break-in oil
By 
ANDY, 
a 
Verified Buyer 
on 
January 22, 2022
Great product.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Amsoil Break-in SAE 30 Oil
By 
CHARLES, 
a 
Verified Buyer 
on 
January 08, 2022
I am currently having AMS provide me with a high performance built race engine for my 2010 GTR. AMS builds and tunes the fastest and most powerful GTRs in the world. I haven't actually used your product yet, but purchased it and will use it based on the recommendation from AMS to break-in my built engine using your engine break-in oil. Because AMS recommended your product, in my view your product must be the best product on the market for the break-in of high performance built race engines. Having read and reviewed your technical data for your products, it is obvious that your products are the most superior on the market.
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