I have a 93 Buick Roadmaster that is our daily driver. It has about 92K miles on it, and I've been using Pennzoil HM 5w30 with a Napa Gold filter and 3000-3500 mile OCIs. Is this a good choice, or being that this is an older engine is there a better option? I've considered going with a synthetic, but I've heard that it's not a good idea to switch an older engine as gaskets and seals may start leaking.
93 Buick Roadmaster 350 (5.7L) V8
- Thread starter milesdriven
- Start date
- Status
It sounds like you're doing a good job keeping that classic on the road.
In your location, I would be more worried about batttling rust than anything else.
In your location, I would be more worried about batttling rust than anything else.
I would switch to synthetic. If it starts leaking then go back to the Dino oil.
If you're planning on putting a lot of miles on it, it wouldn't be a bad idea considering the price difference isn't much when on sale. I switched my 83 305 V8 to synthetic at 160k miles, now its close to 240k miles. It might see 300k miles before I swap it to a newer 5.3 truck engine, or retire it. It will take you a long time to get to that many miles though. Yours is also a roller cam engine so it's less fussy about oil than my flat tappet cam.
That 5.7 V8 will run 500K miles if taken care of properly.
I'd just stick with the HM. It's going to be a syn blend anyways, and it's been working so far. That, and 3,500 mile OCI? You're pampering the thing. Congrats on keeping the old girl on the road, I'd love to have a Roadmaster (sedan or wagon, preferably a wagon) some day. I've always loved B-body's.
I'll be more worried about maintaining its transmission yet than its engine. Those where weak those years.
The Pennzoil HM 5W-30 is s solid choice.
You can go 2, 3 or 4 oil changes per filter change since you change the oil so often.
The engine is solid design and VERY reliable and long lasting.
Don't be afraid to maintain the transmission - as long as you aren't towing anything it should last OK.
You can go 2, 3 or 4 oil changes per filter change since you change the oil so often.
The engine is solid design and VERY reliable and long lasting.
Don't be afraid to maintain the transmission - as long as you aren't towing anything it should last OK.
Just did a fluid and filter change on the trans, hope i can get at least another 50k miles out of it if I go easy on it.
Stick with what you are doing. Great car.
That thing will go 500K if cared for easily !
- Status
Similar threads
