turbominicooper Posted January 13, 2016 Share Posted January 13, 2016 ive got some 1040 semi synthetic oil kicking about, is this ok to run new rings and bearings in etc? Quote Link to post Share on other sites
5e colin Posted January 13, 2016 Share Posted January 13, 2016 you could if you wanted Quote Link to post Share on other sites
funny onion Posted January 13, 2016 Share Posted January 13, 2016 Ran my overhauled engine in on 1040 semi synthetic. Fired it up, let it run to temp, dropped the oil and changed the filter, drove it for 500 miles, changed oil and filter, then drove it for 1000 miles and did the same been fine for 3 years now Quote Link to post Share on other sites
turbominicooper Posted January 13, 2016 Author Share Posted January 13, 2016 happy days cause got 20L of the stuff for £40. is it worth using the lucas oil stabiliser at any point when running in? Quote Link to post Share on other sites
funny onion Posted January 13, 2016 Share Posted January 13, 2016 I wouldn't use additives or anything... just the oil and a magnetic sump plug Quote Link to post Share on other sites
H_D Posted January 13, 2016 Share Posted January 13, 2016 you really want to risk running in fresh rings with normal oil? good luck to you sir.I would never recommend that, there is a reason why you should always use running in/mineral oil for these circumstances. Quote Link to post Share on other sites
Ep82gi Posted January 13, 2016 Share Posted January 13, 2016 we always run our engines in on toyota 10w40 semi synth never once had a problem. Quote Link to post Share on other sites
Whitenoize Posted January 13, 2016 Share Posted January 13, 2016 (edited) They are old engines they are ment to be run on semi if it's a standard engine id run a good semi if it's forged then fully Edited January 13, 2016 by Whitenoize Quote Link to post Share on other sites
turbominicooper Posted January 13, 2016 Author Share Posted January 13, 2016 more yes's then no's... ill use it. cheers Quote Link to post Share on other sites
Johnboy GT Posted January 13, 2016 Share Posted January 13, 2016 I ran mine in on semi synthetic. No issues so far.John Quote Link to post Share on other sites
AdamB Posted January 13, 2016 Share Posted January 13, 2016 Who built it and what do they recommend? Quote Link to post Share on other sites
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