islnder102

I have an 86 CRX Si. I just bought this from a lady last weekend. It has 224,000 miles on it. I noticed she left a quart of oil in the back of the car. The weight was 20W-50 which is way too thick. My guess is she has been using it. I was thinkin of going to 10W-40. Will that be a better weight for my oil use? Also will any specific brand work better than others? I currently use Castrol High Milage since all of my cars are over 100,000 miles.

89 civic si

i say 10 30 whatever high mileage oil you use castrol..if you like it, it will work just as well on a honda..she was probobly using thick oil thinking it would be harder to leak out, for the high mileage of course it probobly didnt hurt the motor

george34

I thought the recommended was 5W-30. I use pennzoil high mileage 5W-30 in my car.

CRXperiment

10w30 or 10w40 is fine. If you notice you consume way too much with a thinner oil, i.e. 10w30, then next time use 10w40. I dont recommend gtx high mileage, just stick with regular Castrol gtx dino, its on sale at Kragen for about 1 dollar a quart.

Targa250R

10W-30 or 10W-40 is fine for California use.

I've tested 5W-30, 10W-30, 10W-40, and 20W-50 Castrol GTX (regular) on my 257,000 mile D16A6 under both daily driving and autocross/HPDE conditions, and found that the oil consumption difference between 10W-40 and 20W-50 is not worth the step up in viscosity.

george34

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">10W-30 or 10W-40 is fine for California use.

I've tested 5W-30, 10W-30, 10W-40, and 20W-50 Castrol GTX (regular) on my 257,000 mile D16A6 under both daily driving and autocross/HPDE conditions, and found that the oil consumption difference between 10W-40 and 20W-50 is not worth the step up in viscosity.</TD></TR></TABLE>

So since my car consumes some oil I should try a higher weight oil like 10W30 or 10W 40?

islnder102

I was told that once you start using a thicker oil, you shouldn't go back to a thinner oil coz your engine has already adapted to the thicker one.

Feed back please.

SIred91

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by islnder102 &raquo;</TD></TR><TR><TD CLASS="quote">I was told that once you start using a thicker oil, you shouldn't go back to a thinner oil coz your engine has already adapted to the thicker one.

Feed back please.</TD></TR></TABLE>

not at all true. it all depends on the internal wear in your motor, the viscocity will not affect anything within reason. if you use a lot between changes then use a higher weight oil, if not, stick with 10 or 5w30.

tons of useful info -- http://bobistheoilguy.com

Crx Jimmy

try some 10w-60 FTW