I have an 07 Tahoe with about 95k on it. This will be my first oil change since I purchased it last month so I don't know the oil history as if synthetic has ever been used. My question is should I just go with regular oil being this high mileage or is it ok to switch to synthetic? I mentioned to the service guy at the dealership and he said to use regular but I wanted to get your opinions. What are the chances that synthetic could cause leaks being more free flowing? Thanks
Synhetic VS Conventional oil changes
- Thread starter champ112
- Start date
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mike06train
Full Access Member
I have 90k on mine and I switched to syn (mobile 1) as I have on alot of high mile cars and have no problems. I still change mine every 300 miles though. I just can't bring myself to let it go past that.
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stevek
Full Access Member
You could always get the 250k engine life guarantee oil, whatever it is... I forgot.
OklabyGodhoma
Full Access Member
Yes you can change to synthetic oil even on a high milage vehicle. Key things to remember:
1) Do your first change of synthetic after 4000 miles and be prepared for lots of dirty oil to come out.
2) Pay attention for any leaks to suddenly show up. Remember lots of oils out there are parafin based (wax) that leave potential leaks plugged with wax. When synthetic is introduced it starts removing that wax buildup and leaks may appear.
3) Depending on the number of miles on your vehicle you may either want to opt for a thicker viscosity of synthetic or use a "high milage" synthetic.
4) Whatever synthetic you choose feel at ease at extending your milage between changes significantly. Please see my earlier post in this thread about personal history and lab testing.
Enjoy and don't be at all suprised if after 1 - 2 thousand miles that your vehicle seems to have more pep.
1) Do your first change of synthetic after 4000 miles and be prepared for lots of dirty oil to come out.
2) Pay attention for any leaks to suddenly show up. Remember lots of oils out there are parafin based (wax) that leave potential leaks plugged with wax. When synthetic is introduced it starts removing that wax buildup and leaks may appear.
3) Depending on the number of miles on your vehicle you may either want to opt for a thicker viscosity of synthetic or use a "high milage" synthetic.
4) Whatever synthetic you choose feel at ease at extending your milage between changes significantly. Please see my earlier post in this thread about personal history and lab testing.
Enjoy and don't be at all suprised if after 1 - 2 thousand miles that your vehicle seems to have more pep.
TS motorsport
TYF Newbie
I just got my tahoe and I will be using mobil 1 for the next oil change. I use german castrol in my z06 since it is by far the best oil out there for the LS6. I do agree with what's been said in the thread, very good points.
