i'm pretty well 100% sure my car has never had anything other than regular 5w-30 in it.

is it safe to switch to a synthetic oil? it's a 97 gsr with about 145,000 km's (about 90,000 miles)

whats the best brand to go with? what grade/weight?

thanks!

 

i wouldn't.. synthetic oils don't tend to work well with higher mileage motors.

 

Bad idea!!!!! A synthetic oil has different detergents that clean better. the problem is that with a higher mile engine all the build up gets eaten off and some of it goes through the seals chewing them up which causes a oil leak with that many miles i would leave it go

some say thay anything over 15k is to late to switch

 

I've heard a lot of people say that if you're car hasn't always had synthetic in it, then synthetic is going to do you no good. I used to have an accord that I always added regular 10w-30 to. I would use a treatment like slick50 or duralube on most oil changes, that thing ran like a dream for ten years. W/ the high miles you're getting to, I would just go with a non-synthetic oil, or something that says it's made for high mileage vehicles.

 

I swapped to synthetic on a car with 72k on it, autocrossed it for years and sold it with 145k. Never leaked or burned oil. I later swapped to synthetic on a car with 41k, have been autocrossing it for 3 years, have done a couple of lapping days at limerock, about 20k later, it still purrs like a kitten, doesn't leak, and doesn't burn.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cleanaccord1997 &raquo;</TD></TR><TR><TD CLASS="quote">Bad idea!!!!! A synthetic oil has different detergents that clean better. the problem is that with a higher mile engine all the build up gets eaten off and some of it goes through the seals chewing them up which causes a oil leak with that many miles i would leave it go

some say thay anything over 15k is to late to switch </TD></TR></TABLE>

I don't agree that over 15K is too late to switch to synthetics. If leaking does occur, the problem isn't necessarily the oil, but probably bad gaskets or the detergent in the synthetic cleaning out particles attached to the gaskets.

ALso from the Mobil1 site: http://www.mobil1.com/index.jsp

"Is Mobil 1 with SuperSyn™ compatible with the seals and gaskets in new and older vehicles?" "Mobil 1 with SuperSyn™ does not cause leaks. It is fully compatible with the elastomeric materials from which automotive seals and gaskets are made. ExxonMobil engineers are wary of conventional oils that tout their use of additional seal-swelling agents. With extended use, these agents can over-soften engine seals, resulting in leaks. More to the point, an oil additive will not rejuvenate worn or damaged seals. The damaged seal may have been caused by a worn rotating metal component in the engine. If an older engine is in good condition and does not have oil leaks, Mobil 1 with SuperSyn™ provides the same advantages as when used in a new engine. ExxonMobil recommends taking measures to repair the leaks, then using Mobil 1 with SuperSyn™. ExxonMobil also always recommends following the automobile manufacturer's manual for the proper oil to use."

 

I have a 95 Odyssey that had 82,000 miles when i switch to synthetic oil.I now have 87,000 miles on it and it does not burn or leak any oil.If engine is mechanically sound it will not burn or leak oil.I use Amsoil 5w30

 

i'm going to try it out and see what happens

 

mobil 1 has a synthetic oil specifically made for high milage engines..
it's 10w30 though and i thought the teg had to have 5w30

what should i get?