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Mattchu60 · 07-28-2019, 09:35 PM

I got my 5.3 swap completed over the weekend, freshly rebuilt 5.3, bored .030 over. Of course it has a roller cam, but I used break in oil anyways. I've driven it around 30 miles after the initial break in, and I want to change the oil for fresh stuff. I'll keep using regular dino oil (non-syn) for the first 5,000 miles. My question is simple - should i keep adding the Lucas break in oil to the engine or is it not needed at this point?

07-28-2019, 09:35 PM	#1
Mattchu60 Registered User Join Date: Jan 2014 Location: Swaledale, IA Posts: 485	LS swap initial break in done, should I keep using break in oil? I got my 5.3 swap completed over the weekend, freshly rebuilt 5.3, bored .030 over. Of course it has a roller cam, but I used break in oil anyways. I've driven it around 30 miles after the initial break in, and I want to change the oil for fresh stuff. I'll keep using regular dino oil (non-syn) for the first 5,000 miles. My question is simple - should i keep adding the Lucas break in oil to the engine or is it not needed at this point?