Synthetic oil

The blend I have see is a maroonish colored bottle. I have to hit the marina today. I'll try and snap a picture with the cam phone.
 
I have $100 in coupons from BW, so hopefully they stock the stuff!

My assumption is once you switch to synthetic you should continue with it?
 
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Tht's what I have been told with respect to my vehicles and synthetic.....
 
mrsrobinson said:
I have $100 in coupons from BW, so hopefully they stock the stuff!

My assumption is once you switch to synthetic you should continue with it?
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Not only that but my Marina mechanic told me to put a label on the engine somewhere visible just in case they do any work on the engines. That way they will not add regular oil if it is needed when they are doing any work.
 
mrsrobinson said:
On a related note I did a project 9+ years ago for an oil additive company. I got the tour of the plant, saw where they ran the engines for hours and hours, broke all the engines down for testing, etc. At the end of the tour I asked them if all these additives really matter. The guy leaned over, and whispered in my ear "No, not if you change you oil regularly, but don't tell anyone, it's how we make a living".
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I'd agree with that. I do run synthetic in our cars because the manufacturer requires it (Saab and BMW). They also have also 15,000 mls. oil change intervals even t hough i change it once a year or every 10K miles. But in our boat I run regular dino oil, Castrol GTX High Mileage 20W-50 and since we only boat about 60 hours a year, I change it twice a year. At approx. $12 for a five quart jug of Castrol GTX it's only $48 for the oil plus $18 for the two oil filters to do an oil change on our twin 8.1s engines. that keeps my engine clean and well lubed. In teh genny I run diesel 15W-40 oil (Preferrably Chevron DELO 400).
 
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Since everyone is on the topic of synthetic blends, let's see if someone can answer these questions. Let's consider an oil manufacturer makes a blend that is 95% dino and 5% syn. Is there a specific manufacturing process to create this blend or are the oils just added together and "blended"? If the later is the case, what is the difference in buying, let's say, one quart of Mobil 1 5W-30 synthetic and one quart of Castrol dino oil 5W-30 and making a 50/50 blend? Or if you prefer, use oil from the same manufacturer. I have always heard you should not add synthetic to regular oil and vice versa, but, if the oil is "blended" in a similar fashion, what would it matter?
 
I work for a company that makes heavy duty axles and we have done extensive testing on mixing synthetic & mineral gear oil and grease. All tests show that it is OK to mix synthetic and mineral. You will lower the properties of the synthetic, but it will still be better than the mineral alone.

ruf1967 said:
Since everyone is on the topic of synthetic blends, let's see if someone can answer these questions. Let's consider an oil manufacturer makes a blend that is 95% dino and 5% syn. Is there a specific manufacturing process to create this blend or are the oils just added together and "blended"? If the later is the case, what is the difference in buying, let's say, one quart of Mobil 1 5W-30 synthetic and one quart of Castrol dino oil 5W-30 and making a 50/50 blend? Or if you prefer, use oil from the same manufacturer. I have always heard you should not add synthetic to regular oil and vice versa, but, if the oil is "blended" in a similar fashion, what would it matter?
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I was in Boaters World today. They have this synthetic oil, and, believe it or not it was less expensive than the regular. Plus, 10% off for purchases over $70.
 
mrsrobinson said:
I was in Boaters World today. They have this synthetic oil, and, believe it or not it was less expensive than the regular. Plus, 10% off for purchases over $70.
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What are the details? Type, name (there's a couple different names), price?
 
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