Engine Swap Over - First Oil Selection

FluffyChicken

Petty Officer 2nd Class
Joined
Mar 29, 2007
Messages
167
Hello,

The motor is coming along nicely. I will be likely putting oil in the block tonight or tomorrow night to do the initial priming. I'd prefer to run volvo penta full synth but I also want to consider the initial 3-5 hours of running a rinse if you will (might even throw some seafoam in there for the last hour or two if you recommend). I'll do an oil change to the better stuff in a week or two after i make sure she's running well. Could i get away with a 10w-40 synth blend valvoline for example? This motor is out of a 97 silverado (seems to be in great shape actually) with 107k miles.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,957
Ayuh,..... I run 15W-40 Rotella diesel oil in all my motors, from lawn mowers to boats, pickups, 'n big rigs,.....
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,566
Rotella T4 is dinosaur juice

T5 is dino-syn mix

T6 is synthetic (usually distilled from natural gas )
 

Scott06

Admiral
Joined
Apr 20, 2014
Messages
6,440
Go with Rotella conventional (T4). When I got my repower from michigan motorz they required use of rotella for break in. No synthetic for 100 hrs.

I used conventional quicksilver 25-40 then at 100 hrs switched to mobil one
 
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