Quote:
Originally Posted by Ken300D
Here are some general tips to reduce emissions at test time:
1) Change oil and filter just before going to the test station. This reduces emissions from burning oil.
2) For my part, I would use an oil additive like STP Oil Treatment to thicken the oil a bit and further reduce emissions from oil smoke.
3) Have the car fully warmed up before testing.
Ken300D
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Well Ken, in my humble opinion, all the afformentioned " Tricks " will only serve to reduce your HC numbers.