92EG8

i purchase mobil 1 syntheic oil with 10w 30 i just bought a used 99 civic ex engine and would like to know if it would be bad if i put synthetic oil in it ? all other oils have been drained . car has only 90,000 miles (engine wise

bmoua

you dont have to use synthetic oil for our d-motors, but it really depends on the person. In your case you have 90k on your motor...i'd say use the half and half or non synthetic...if remember correctly if you pass 80k or so your not supposed to go switch to synthetic.

BigJ5

Use it, synthetic is always better. I've never heard about this 90k crap before but all synthetic basically is nothing but regular oil with a higher tolerance on the compound. The oil strains are more consistant and react in a more uniform fashion then with regular oil. That is how burning is reduced and efficiency is increased.

As long as you don't leak oil run the syn, cause other than that your dripping money....

Goodluck!

bart2546

I have the same car and I switched to synthetic on my first oil change, purchased with 75,000 miles on her. I use 10w30 constantly, usually I switch to 5w30 in winter but I don't think I will now that I did go synthetic with this car. I used to work in Sears Auto dept. and some of the mechanics there stated the same thing, that after about 80 to 100,000 miles you shouldn't switch if it's been run on dino oil all it's life, I disagree simply for the fact that I feel synthetic protects better due to the fact that it builds up an extra layer of protection on your piston walls and older cars with more mileage could use that protection. Now one thing is to not switch to synthetic and back to dino multiple times, go with one or the other.

cwf1988

ROYAL PURPAL

LAWNMOWER

Mobile 1 is great oil! I have used it in every one of my cars and they love it! Synthetic

EG2Driver

weight out the cost of the oil and the time u want to keep ur engine. Not worth it for any honda IMO

O RLY

AMS OIL, no questions asked. There a huge write-up on this topic somewhere, but I'm lazy like you, not to be ignorant. AMS OIL FTW!!!

williejohnson

i was once told that synthetic oil will go into warn seals farther then regular if you have any oil leaks i wouldnt use it cause it might leak more

RTE117

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cwf1988 &raquo;</TD></TR><TR><TD CLASS="quote">ROYAL PURPAL </TD></TR></TABLE>

Overrated.

Anywho, there is no real magic mileage that dictates whether synthetic can be used or not. The thing to watch for is consumption. If you have a beat/high mileage engine, it is probably not going to benefit so much from a fully-synthetic oil (and might cause a higher rate of consumption). If you are always up-to-date with your maintenance, Dino oil is perfectly fine for a stock Civic. I'd suggest 5w-20/5w-30 though. If you're already consuming oil, a HM dino will probably suit you.