snafufx

iTrader: (14)

A little background, I noticed I have been losing some coolant in my reservoir lately. No leaks are visible, nothing leaking on ground. The car seems to be running normal, but on occasion it feels like the engine runs like the rpms are higher than they actually are at low speeds (engine sounds louder basically). This morning did a compression test. Test was done 5 turns, 100% throttle, crank sensor disconnected. First cold engine, second warm. S1 cams, arp head studs, cometic head gasket engine wise. Also did the test on all 3 times and all 3 got same results. About three weeks ago, a boost leak was conducted where one of my intercooler pipes was leaking, re-tightened t-bolt clamp and everything fine. No loss of boost. 06 IX SE
COLD (passenger side to driver side results)
130/120/150/140
added oil to first two low cylinders:
160/140/xx/xx
WARM (passenger side to driver side)
150/140/155/146
added oil to all cylinders:
165/155/166/165
I'm concerned with the second cylinder of 140, but it seems to be in spec of within 10% of each cylinder (barely). I still have the stock radiator and running 401 whp mustang at CBRD. Could that be a problem and need to upgrade that? Thanks in advance.

eb66

iTrader: (5)

Compression seems fine. 140 is ok for the ix. Not sure how much oil you added, but its normal for it to go up a bit.

cij911

iTrader: (14)

Your are only supposed to do the compression test on a 'warm' engine. Your warm results are all within 10% and all in the normal range - you are fine....

geardog75

iTrader: (5)

do you smell radiator fluid burning off at all? i had a pinhole leak in my turbo coolant line as the fan would kick on it would blow the droplets onto the motor and burn off, took me forever to figure out where it was comming from. but i had the same issue you have with the resevior becoming low whenever i fill it up.

ToxicFab

iTrader: (42)

I had 135-140 across. Always thought that was low.

snafufx

iTrader: (14)

OK, I feel better now I added about 1/2 cap full from a mobil one 5 qt cap, so guessing around little over a tablespoon? I can smell the coolant after I drive around a bit in the engine compartment and can sometimes smell it in the cabin area. I'll recheck all hoses. If anything it has to be a pinhole since there is none dripping to the ground. Thanks again for the assistance, I was getting worried for a sec.