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I already swapped the POS computer controlled carb and ign for non feedback units.It works pretty good now.

I've owned alot of Amcs with the inline six.They always seem to prefer thicker oil.So now that I'm on the synthetic oil bandwagon,is Castrol edge 5w50 a good choice?

It has a lockup TC.

I Just got a nice 82 Eagle with 200000 on The clock.Its a auto and 258 carbed six.I'm wondering if I should use atf+4 in the trans and transfer case,and Delo 80w90 in the rear?

I daily drive a 78 Concord.

How about supertech 15w40?

It's standard ignition,thank god,not lean burn.

IM just trying to eek out them best mpg,right now my best is 14.

Should I dare use 5w20?In a 77 Dodge Aspen 318?My dads 61 Rambler 196 runs just fine on the stuff.

Yes at first I thought it was a flat,but it's a roller.

Now that's scary,hopefully mine will last.

I just scored a 87 Caprice with a 305,I know these engines are known to eat cams.I was wondering if I should use a HDEO.

Interesting.My dad runs 10w40 in all his 70s GM cars.I may just get a mechanical oil pressure gauge to see what my numbers are.

0w10?where the heck is that found?

I'm not sure how to post pics here.But it has a 258 and 2bbl.It's a Canada car.

Ok what about 20w50 in the summer?

I have a 78 Concord with a 258 straight six that I drive daily.I'm currently using 5w30 and it runs really well.But I scored some 5w20 on sale last week and I'm due for an oil Change.Thoughts?

Just picked up a clean 78 Amc Concord with a 258.I want to run hdeo but am wondering if I should go with Rotella 5w40 Syn,10w30 semi syn,or 15w40,straight 30 conventional.Or possibly Delo 10w30?

He was saying 75w90 was too thin and to use 80w90 instead... I figure its not true...

I was at auto zone and noticed delo 75w90 rear diff oil was cheaper than all the conventionals..I was going to get some to change the fluid on the diff in my 82 Buick lesabre RWD..the guy atctge parts counter said it would be too thin..is this true?