Subject: Re: Hot days of Summer by Scott7 on 2012/7/26 3:12:14
Quote:
Matatk wrote: Oh, and as far as "normal" operating range, the main fan on the L98s was not set to come on until the 228* range or so, the secondary fan was set to come on around 238* or so. The stock tstat is a 195*. These higher temps were used for emissions more than anything else. I don't like to run my car at 225* even though that's what they designated.
I have noticed that after my break in period when I switched to synthetic oil, the oil temps were much lower and more stable. I also noticed that bypassing my heater core lowered my coolant temps. I think it was gunked/clogged after 20 years before it finally sprung a leak.
Matthew
Bypassing the heater core lowered your cooling temps, did you bypass the intake manifold also?
Yes I agree I like to run cooler but I found I was replacing the cat every two years, I've been told the lower temps were contributing to its failure. Since I switch over to dual exhast with bullet cats I've passed emissions twice so thats been a good improvement. These little cats are going on 4 years now. I've been using synthetic oil exclusively for many years, infact most of the car's life.
