ok just fitted a engine to my estate after last 1 lost oil pressure cos of pump i think

this new engine is playing silly buggers tho, when it gets warm and the revs go to about 1k or under the oil light pops on but only when reving low and its warm, dont ever do it when cold or reving more

i think some1 had put some real thin oil in cos its just had a new built ported n cammed head fitted

u think what i think??

cheers