Additive

Engine rebuild in a can. I don't trust such things. If you have no problems, leave well enough alone.

Yeah those products are designed to squeeze a few more miles out of a tired engine before it gets junked. If your car is running well, keep it running by properly maintaining it.

Thanks guys!! The advertising is so tempting tho.......

my .02$ is...don't %$#@ with it.... ;-) if it is working ok, compression is alright...no major leaks, no funny noises....i would just tune it up, push the boost to around 12-15psi....slap on some IPD performance items...and drive it for another

250k miles...but, hell...if it makes you sleep better at night...start watching eBay for a used motor, to keep in the garage...if you are not in a hurry, i think you can find one for around $500 at most...i found a 940t for $400...i would go light on the additivives...extra $ spens, w/no verifyable results... i use them ocassionaly...i have a tranny fluid leake, we (my mechanic & i) can't find the leake...so i have been hoping the "stop leak" fluids would work...but, no joy yet... after 4 small cans...over the last 12 mos...

but i digress...damm man...you have one of the best build volvos on the market...fix it up and drive the %^$# out of it...if nothing is major wrong...do some performance mods ie: turn up the boost, suspension braces & thick sway bars.. nice sticky tyres...treat the leather interior...and ENJOY... ;-)

just my opinion, i could be wrong

Thanks... A little off topic but I was offered a 850R computer trade for my 850 computer.... The 850R was in an accident and my buddy offered to trade with me I had to turn him down because I wasn't sure if the chip was too much for my engine what do you think?? was it a good move???

speaking of additives..... ;-)

anyone ever use the octaine booster, in the orange plastic bottle i am trying from advanced auto...(i think advanced) i am thinking it is a STP product.....anyway...i am running a overboosted 1993 940t...i am running about a 93 octane priemium fuel...the best i can get on the street...and i thought a i would try some booster.. any opinions on this type of additive??

Is your 850 a high pressure turbo? If so it's the same motor as the R I think. If it's a low pressure then swapping computers probably isn't a good idea.

It is A high pressure turbo.. but I was just curious about the fuel management if it would be compatible with my engine.

I've never known anyone who's done this swap first hand, but have heard it's no problem, as long as all equipment is the same from car to car. (Same transmission, EGR present etc.) Also, 1996 is OBD-II compliant, some 95s were, some weren't, ECUs are not swappable between the types.

Same motor then, so it's compatible as long as the year is the same, or the computers are the same across those years. The R just runs higher boost.

i am not sure...you had better "seek professional help" at

or someone other than myself to advise you on something like this...sorry.......