I'm thinking about doing a homemade grill block on the Prizm. But while sitting in traffic today(with no A/C running) I notice the temp went up to 202F. If I do a grill block, wouldn't the temp skyrocket while in traffic, even with the rad. fan going?
"But Doc, we dont' have enough road to get it up to 88 miles per hour"
My experience: I use a grill block since end 2009 on my black Civic. In summer around 60%, winter 85-95%. I don't suffer the temps you have now in US. But...strangely enough: in summer, if I use the AC my temps (engine and radiator) go down. That's because the fans are forced to run in such case (compressor AC engaged). And with approx. 40% open a lot of air is still sucked in.
Results of this mod are positive, but nothing more than a single % or so. I had much more notible result when going from 10W40 to 0W20 engine oil.
An my last mod was an engine block heater. Also positive result of course, but seem a bit less influencing than the engine oil. Allthough the period I only had the 0W20 without the EBH was very short. So I can't show any hard data as I did my mods a bit to fast one after the other.
i'm going to be creating a aerogrill for my cobalt soon it's not going to completely close off the grill because we need that air flow for a reason but it will allow the air to flow more smoothly compared to getting chopped up by my factory grill
Since GM and Ford are currently advertising cars with automatic grill blocks, I have to think there might be something to them.
If your temperature gauge reads hotter than normal;
1. Radiator shops usually don't charge to test the radiator.
2. After shut-down, pull the fan fuze, and feel the bottom of the radiator. if it is cool it needs replacement.
I use and talk about, but don't sell Amsoil.
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06 4.7 Tundra replaced a 98 Dakota 3.9.
623,000 miles on original engine and transmission, using Amsoil by-pass filters and lubrication.
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