hello everyone, first post here. this site is very well known for being bang on with oil, so here goes!
i'm having a terrible time trying to find the correct oil for my car. its a 2004 hyundai accent, manual. the spec from hyundai is 75W-90 GL-4. as i understand the GL-5 or oils that cover both GL4 and 5 are inappropriate due to the higher sulfur content which wears away at the brass synchro rings.
you'd think this would be easy, but the dealers will not sell the oil. also i have been to every parts store in town with no luck.
i know everyone is going to say use redline MT90 but i am very hesitant to use a synthetic again. here is why:
used amsoil full synthetic 75W-90 GL4 in the past, exact spec except synthetic over conventional. at 160k kms the trans blew a bearing and the result was having to spend over $1000 on a used transmission and installation. normally i would not blame the oil, but here's where it gets strange...i put the same oil in the new trans thinking i had bad luck with the last one. then going into 3rd the trans would grind briefly but would work. had a warranty and the shop rebuilt the trans finding no evidence of defects...rebuilt 3rd gear components anyways since its under warranty.
after this the trans STILL had the same issue. the solution was to change over to conventional oil. still running fine to this day.
now after doing the CV boots i needed to top up the trans. i couldn't find conventional 75W-90 GL4 anywhere. i ended up using about half a quart of cheap [censored] 80W-90 that covers quite a few specs...GL3, 4, 5, god knows what else. by the way, this issue forced me to reuse the oil i drained out. cleaned the drain pan well prior, etc.
i was hoping someone could give me some insight as to what is going on and what my options are here. the hyundai forums are quite useless, you are pretty much a heretic if you don't use the redline stuff. can't get anywhere there.
thanks guys. teach the noob!
i'm having a terrible time trying to find the correct oil for my car. its a 2004 hyundai accent, manual. the spec from hyundai is 75W-90 GL-4. as i understand the GL-5 or oils that cover both GL4 and 5 are inappropriate due to the higher sulfur content which wears away at the brass synchro rings.
you'd think this would be easy, but the dealers will not sell the oil. also i have been to every parts store in town with no luck.
i know everyone is going to say use redline MT90 but i am very hesitant to use a synthetic again. here is why:
used amsoil full synthetic 75W-90 GL4 in the past, exact spec except synthetic over conventional. at 160k kms the trans blew a bearing and the result was having to spend over $1000 on a used transmission and installation. normally i would not blame the oil, but here's where it gets strange...i put the same oil in the new trans thinking i had bad luck with the last one. then going into 3rd the trans would grind briefly but would work. had a warranty and the shop rebuilt the trans finding no evidence of defects...rebuilt 3rd gear components anyways since its under warranty.
after this the trans STILL had the same issue. the solution was to change over to conventional oil. still running fine to this day.
now after doing the CV boots i needed to top up the trans. i couldn't find conventional 75W-90 GL4 anywhere. i ended up using about half a quart of cheap [censored] 80W-90 that covers quite a few specs...GL3, 4, 5, god knows what else. by the way, this issue forced me to reuse the oil i drained out. cleaned the drain pan well prior, etc.
i was hoping someone could give me some insight as to what is going on and what my options are here. the hyundai forums are quite useless, you are pretty much a heretic if you don't use the redline stuff. can't get anywhere there.
thanks guys. teach the noob!
