JB,now you know the boat that i am in.i agree with everything you have said 100%.it doesn't matter to me how many people put there stamp of approval on an idea.it is ALL guessing at this point.
IF i had seen a complete reformulating on RL 5w-40,then i would be less inclined as to weather i should continue to use it or not.for example,motul 300v 5w-40,going from memory,did a bit of reformulating some time ago.you could clearly see some levels of additives go down but others go up(including,amine alkaryle in their msds,which does not show up on UOA),BUT that is NOT what i am noticing with RL 5w-40.all i see is a clear and total lack of moly(actually 3 ppm) and a slight reduction of Ph and ZN.in other words,cutting the legs(add pack)right from under you.weak knees indeed.it seems to me the last line of defence is weaker now.(especially considering the competitive nature of esters)
i still have not contacted RL because i am still some way from my next OCI but i know what is in there now(engines) is the "old" formula.also,it may be possible that the current formula is just an interum so i would prefer to contact them when i am ready.
as of right now,my thinking is #1-switch to RL 10w-40 or #2-a totally different brand.....but i am not done processing all the information yet,it's too early.
everything right now,imo,is just guessing on everyones part no matter what they say,but from what little i do see,my prefered 5w-40 has indeed changed and for my application,not necessarily for the better.(a simplistic attempt to meet ash level CJ-4)
IF i had seen a complete reformulating on RL 5w-40,then i would be less inclined as to weather i should continue to use it or not.for example,motul 300v 5w-40,going from memory,did a bit of reformulating some time ago.you could clearly see some levels of additives go down but others go up(including,amine alkaryle in their msds,which does not show up on UOA),BUT that is NOT what i am noticing with RL 5w-40.all i see is a clear and total lack of moly(actually 3 ppm) and a slight reduction of Ph and ZN.in other words,cutting the legs(add pack)right from under you.weak knees indeed.it seems to me the last line of defence is weaker now.(especially considering the competitive nature of esters)
i still have not contacted RL because i am still some way from my next OCI but i know what is in there now(engines) is the "old" formula.also,it may be possible that the current formula is just an interum so i would prefer to contact them when i am ready.
as of right now,my thinking is #1-switch to RL 10w-40 or #2-a totally different brand.....but i am not done processing all the information yet,it's too early.
everything right now,imo,is just guessing on everyones part no matter what they say,but from what little i do see,my prefered 5w-40 has indeed changed and for my application,not necessarily for the better.(a simplistic attempt to meet ash level CJ-4)