Originally Posted By: EricG
Originally Posted By: lonestar
If you snoop around for info on DI engines, regardless of manufacture, you will find that that they tend to develop a lot of deposits on the values and tend to clog up PVC systems. Without any specific basis besides logic, I will only run a Tier 1 gasoline in my DI and will use a synthetic oil with a very low Noack rating. And although people on BITOG will come out of the wood work on this, I will dump the synthetic oil well before the OLM says it is time. This is solely based on the UOAs I have seen on this engine thus far and not my UOAs for I only have 2K miles on my 3.6L.
I believe this is only the 2nd year for the 3.6L DI and it (the DI version of the 3.6L) was used exclusively selective Cadillacs in 2008. It should provide a good service life but I suspect to achieve that will take a bit more care and attention to the type of gas used, type of oil used, clean air filters, and clean PVC systems. Time will tell.
More DI engines will be introduced as manufactures work to achieve new fuel efficiency ratings. The 3.6L has a lot of power and torque for its size but as stated, I do not think it is an engine that you can run oil in for 8K to 10K miles and use whatever gas they have at the local Stop and Go.
It's PCV not PVC!
Sorry, thats a pet peive of mine!
Some people say Positive Crankcase Ventilation and some say Positively Vented Crankcase.....same thing, just semantics
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